diff --git a/package.json b/package.json
index 20f1613..f8d74c8 100755
--- a/package.json
+++ b/package.json
@@ -43,6 +43,7 @@
   },
   "prettier": {
     "tabWidth": 4,
-    "jsxBracketSameLine": true
+    "jsxBracketSameLine": true,
+    "printWidth": 100
   }
 }
diff --git a/src/Controllers/rulesetController.ts b/src/Controllers/rulesetController.ts
index e6aa69f..0527a2c 100644
--- a/src/Controllers/rulesetController.ts
+++ b/src/Controllers/rulesetController.ts
@@ -3,5 +3,25 @@ import RulesetCollection from "../ObjectCollections/RulesetCollection";
 
 export const getRuleset: RequestHandler = async (req, res) => {
     const ruleset = await RulesetCollection().read(req.params.id);
-    res.json(ruleset.getSchemaJSON());
-};
\ No newline at end of file
+    res.json(ruleset.getSchema());
+};
+
+export const addRuleset: RequestHandler = async (req, res) => {
+    const submission = req.body;
+    if (validateRulesetSchema(submission)) {
+        const savedRuleset = await RulesetCollection().create(submission);
+        res.send({result: "success", newRuleset: savedRuleset})
+    }
+    else {
+        res.status(400).send({result: "failure", message: "Invalid ruleset submission format."});
+    }
+};
+
+export const getAllRulesets: RequestHandler = async (req, res) => {
+    const rulesets = await RulesetCollection().getAllRulesets();
+    res.send({rulesets: rulesets.map(ruleset => ruleset.getSchema())});
+};
+
+function validateRulesetSchema(object: any): boolean {
+    return true;
+}
\ No newline at end of file
diff --git a/src/Controllers/statsController.ts b/src/Controllers/statsController.ts
index 3cb8c55..47a9dd8 100755
--- a/src/Controllers/statsController.ts
+++ b/src/Controllers/statsController.ts
@@ -1,13 +1,13 @@
 import KadiUserCollection from "../ObjectCollections/KadiUserCollection";
 import PlayerCollection from "../ObjectCollections/PlayerCollection";
 import Player from "../Objects/Player";
-import {RequestHandler} from "express";
+import { RequestHandler } from "express";
 import ScoreCalculator from "../Objects/ScoreCalculator";
 import KadiUser from "../Objects/KadiUser";
-import {CellFlag} from "../enums";
+import { CellFlag } from "../enums";
 import RulesetCollection from "../ObjectCollections/RulesetCollection";
 import Ruleset from "../Objects/Ruleset";
-import {OutcomeType} from "../Objects/DefaultStatsMongoData";
+import { OutcomeType } from "../Objects/DefaultStatsMongoData";
 
 interface GameSubmission {
     ruleset: string;
@@ -17,7 +17,7 @@ interface GameSubmission {
 
 export interface ProcessedGameSubmission {
     ruleset: string;
-    players: {id: string, nick: string}[];
+    players: { id: string; nick: string }[];
     results: ScoredResultsWithOutcome[];
 }
 
@@ -32,16 +32,18 @@ enum ResultType {
     loser,
 }
 
-type ScoredResults = {score: number, results: PlayerGameResult};
-export type ScoredResultsWithOutcome = {score: number, results: PlayerGameResult & {outcome: OutcomeType}};
+type ScoredResults = { score: number; results: PlayerGameResult };
+export type ScoredResultsWithOutcome = {
+    score: number;
+    results: PlayerGameResult & { outcome: OutcomeType };
+};
 
 export const listGames: RequestHandler = async (req, res) => {
     const user = req.user as KadiUser;
     const gamesList = await KadiUserCollection().getSavedGamesForUser(user);
     if (gamesList) {
         res.json({ games: gamesList });
-    }
-    else {
+    } else {
         res.sendStatus(404);
     }
 };
@@ -55,7 +57,10 @@ export const saveGame: RequestHandler = async (req, res) => {
     }
     const rulesetUsed = await RulesetCollection().read(submission.ruleset);
     const scoredResultsWithOutcomes = await processStats(rulesetUsed, submission.results, user);
-    const newGame = await KadiUserCollection().addGameForUser(user, {...submission, results: scoredResultsWithOutcomes});
+    const newGame = await KadiUserCollection().addGameForUser(user, {
+        ...submission,
+        results: scoredResultsWithOutcomes,
+    });
     res.send({ message: "Game submitted successfully!", newGame: newGame });
 };
 
@@ -64,11 +69,13 @@ export const getStats: RequestHandler = async (req, res) => {
     const stats = await KadiUserCollection().getAllStatsForUser(user);
     if (stats) {
         res.json({
-            pStats: stats.pStats.map(pStats => ({...pStats, stats: pStats.stats.getData()})),
-            accStats: stats.accStats.getData()
+            pStats: stats.pStats.map((pStats) => ({
+                ...pStats,
+                stats: pStats.stats.getData(),
+            })),
+            accStats: stats.accStats.getData(),
         });
-    }
-    else {
+    } else {
         res.sendStatus(404);
     }
 };
@@ -78,20 +85,30 @@ async function addNewGuests(submission: GameSubmission, user: KadiUser): Promise
     for (const playerDetails of submission.players) {
         const isNewPlayer = playerDetails.id === playerDetails.nick;
         if (isNewPlayer) {
-            const newGuest: Player = await KadiUserCollection().addGuestForUser(user, playerDetails.nick);
+            const newGuest: Player = await KadiUserCollection().addGuestForUser(
+                user,
+                playerDetails.nick
+            );
             newGuestIds.push(newGuest);
         }
     }
     return newGuestIds;
 }
 
-function fillOutSubmissionWithNewIds(submission: GameSubmission, newGuestList: Player[]): GameSubmission {
+function fillOutSubmissionWithNewIds(
+    submission: GameSubmission,
+    newGuestList: Player[]
+): GameSubmission {
     for (const newGuest of newGuestList) {
-        const gameResultsFromNewGuest = submission.results.find((result) => result.playerId === newGuest.getNick());
+        const gameResultsFromNewGuest = submission.results.find(
+            (result) => result.playerId === newGuest.getNick()
+        );
         if (gameResultsFromNewGuest) {
             gameResultsFromNewGuest.playerId = newGuest.getId().toString();
         }
-        const playerEntryForNewGuest = submission.players.find((player) => player.id === newGuest.getNick());
+        const playerEntryForNewGuest = submission.players.find(
+            (player) => player.id === newGuest.getNick()
+        );
         if (playerEntryForNewGuest) {
             playerEntryForNewGuest.id = newGuest.getId().toString();
         }
@@ -99,35 +116,45 @@ function fillOutSubmissionWithNewIds(submission: GameSubmission, newGuestList: P
     return submission;
 }
 
-async function processStats(ruleset: Ruleset, results: PlayerGameResult[], account: KadiUser): Promise<ScoredResultsWithOutcome[]> {
+async function processStats(
+    ruleset: Ruleset,
+    results: PlayerGameResult[],
+    account: KadiUser
+): Promise<ScoredResultsWithOutcome[]> {
     const calc = new ScoreCalculator(ruleset);
     let playerScoreList: ScoredResults[] = [];
     for (const result of results) {
         calc.hydrateWithJSON(result);
         playerScoreList.push({
             score: calc.getTotal(),
-            results: result
+            results: result,
         });
     }
     const playerScoreListWithOutcomes = updateScoreListWithOutcomes(playerScoreList);
     await updateStatsForIndividualPlayers(playerScoreListWithOutcomes, ruleset);
-    const gameResults = playerScoreListWithOutcomes.map(scoredResults => scoredResults.results);
+    const gameResults = playerScoreListWithOutcomes.map((scoredResults) => scoredResults.results);
     await KadiUserCollection().updateAccountStats(account.getId(), gameResults, ruleset);
     return playerScoreListWithOutcomes;
 }
 
-function updateScoreListWithOutcomes(scoreResultsList: ScoredResults[]): ScoredResultsWithOutcome[] {
+function updateScoreListWithOutcomes(
+    scoreResultsList: ScoredResults[]
+): ScoredResultsWithOutcome[] {
     scoreResultsList = sortDescendingByScore(scoreResultsList);
-    const playerScoreListWithOutcomes: ScoredResultsWithOutcome[] = scoreResultsList.map(scoredResults => {
-        const newResults = {...scoredResults.results, outcome: OutcomeType.loss};
-        return {...scoredResults, results: newResults};
-    });
+    const playerScoreListWithOutcomes: ScoredResultsWithOutcome[] = scoreResultsList.map(
+        (scoredResults) => {
+            const newResults = {
+                ...scoredResults.results,
+                outcome: OutcomeType.loss,
+            };
+            return { ...scoredResults, results: newResults };
+        }
+    );
     let runnerUpsStart: number;
     if (playerScoreListWithOutcomes[0].score !== playerScoreListWithOutcomes[1].score) {
         playerScoreListWithOutcomes[0].results.outcome = OutcomeType.win;
         runnerUpsStart = 1;
-    }
-    else {
+    } else {
         runnerUpsStart = updateScoreListWithDraws(playerScoreListWithOutcomes);
     }
     const losersStart = updateScoreListWithRunnerUps(playerScoreListWithOutcomes, runnerUpsStart);
@@ -139,28 +166,32 @@ function updateScoreListWithDraws(scoreResultsList: ScoredResultsWithOutcome[]):
     for (let i = 0; i < scoreResultsList.length; i++) {
         if (scoreResultsList[i].score === scoreResultsList[0].score) {
             scoreResultsList[i].results.outcome = OutcomeType.draw;
-        }
-        else {
+        } else {
             return i;
         }
     }
     return scoreResultsList.length;
 }
 
-function updateScoreListWithRunnerUps(scoreResultsList: ScoredResultsWithOutcome[], runnerUpsStartIndex: number): number {
+function updateScoreListWithRunnerUps(
+    scoreResultsList: ScoredResultsWithOutcome[],
+    runnerUpsStartIndex: number
+): number {
     scoreResultsList[runnerUpsStartIndex].results.outcome = OutcomeType.runnerUp;
     for (let i = runnerUpsStartIndex + 1; i < scoreResultsList.length; i++) {
         if (scoreResultsList[i].score === scoreResultsList[i - 1].score) {
             scoreResultsList[i].results.outcome = OutcomeType.runnerUp;
-        }
-        else {
+        } else {
             return i;
         }
     }
     return scoreResultsList.length;
 }
 
-function updateScoreListWithLosses(scoreResultsList: ScoredResultsWithOutcome[], losersStartIndex: number) {
+function updateScoreListWithLosses(
+    scoreResultsList: ScoredResultsWithOutcome[],
+    losersStartIndex: number
+) {
     for (let i = losersStartIndex; i < scoreResultsList.length; i++) {
         scoreResultsList[i].results.outcome = OutcomeType.loss;
     }
@@ -170,11 +201,18 @@ function sortDescendingByScore(playerScoreList: ScoredResults[]) {
     return playerScoreList.sort((a, b) => b.score - a.score);
 }
 
-async function updateStatsForIndividualPlayers(playerScoreListWithOutcomes: ScoredResultsWithOutcome[], rulesetUsed: Ruleset): Promise<void> {
+async function updateStatsForIndividualPlayers(
+    playerScoreListWithOutcomes: ScoredResultsWithOutcome[],
+    rulesetUsed: Ruleset
+): Promise<void> {
     for (const scoredResults of playerScoreListWithOutcomes) {
         await PlayerCollection().updateStatsForPlayer(
             scoredResults.results.playerId,
-            {...scoredResults.results, outcome: scoredResults.results.outcome},
-            rulesetUsed);
+            {
+                ...scoredResults.results,
+                outcome: scoredResults.results.outcome,
+            },
+            rulesetUsed
+        );
     }
 }
\ No newline at end of file
diff --git a/src/ObjectCollections/KadiUserCollection.ts b/src/ObjectCollections/KadiUserCollection.ts
index 6b57122..6b88e54 100644
--- a/src/ObjectCollections/KadiUserCollection.ts
+++ b/src/ObjectCollections/KadiUserCollection.ts
@@ -1,16 +1,21 @@
-import {CredentialsTakenError} from "../errors";
+import { CredentialsTakenError } from "../errors";
 import bcrypt from "bcrypt";
-import {SupportedLang} from "../enums";
-import {AccountStatsMongoData, defaultAccountStatsMongoData, OutcomeType, PlayerGameResults} from "../Objects/DefaultStatsMongoData";
-import {getMongoObjectCollection} from "../database";
-import KadiUser, {LoginDetails} from "../Objects/KadiUser";
-import {ActiveRecordId, OrId} from "../Objects/ActiveRecord";
+import { SupportedLang } from "../enums";
+import {
+    AccountStatsMongoData,
+    defaultAccountStatsMongoData,
+    OutcomeType,
+    PlayerGameResults,
+} from "../Objects/DefaultStatsMongoData";
+import { getMongoObjectCollection } from "../database";
+import KadiUser, { LoginDetails } from "../Objects/KadiUser";
+import { ActiveRecordId, OrId } from "../Objects/ActiveRecord";
 import MongoStoredObjectCollection from "./MongoStoredObjectCollection";
 import SavedGameCollection from "./SavedGameCollection";
 import SavedGame from "../Objects/SavedGame";
 import PlayerCollection from "../ObjectCollections/PlayerCollection";
 import Player from "../Objects/Player";
-import {ProcessedGameSubmission} from "../Controllers/statsController";
+import { ProcessedGameSubmission } from "../Controllers/statsController";
 import Ruleset from "../Objects/Ruleset";
 import RulesetCollection from "./RulesetCollection";
 import AccountStats from "../Objects/AccountStats";
@@ -29,6 +34,15 @@ export interface KadiUserMongoData {
     savedGames: ActiveRecordId[];
 }
 
+export interface StatsListing {
+    accStats: AccountStats;
+    pStats: {
+        nick: string;
+        playerId: ActiveRecordId;
+        stats: PlayerStats;
+    }[];
+}
+
 class KadiUserCollection extends MongoStoredObjectCollection<KadiUserMongoData> {
     private static instance?: KadiUserCollection;
     private constructor() {
@@ -43,16 +57,11 @@ class KadiUserCollection extends MongoStoredObjectCollection<KadiUserMongoData>
     }
 
     async init() {
-        this.mongoDbClientCollection = getMongoObjectCollection("users")
+        this.mongoDbClientCollection = getMongoObjectCollection("users");
     }
 
     private kadiUserFrom(data: KadiUserMongoData): KadiUser {
-        return new KadiUser(
-            data.id,
-            data.username,
-            data.email,
-            data.password,
-            data.lang);
+        return new KadiUser(data.id, data.username, data.email, data.password, data.lang);
     }
 
     async read(id: string): Promise<KadiUser> {
@@ -64,8 +73,7 @@ class KadiUserCollection extends MongoStoredObjectCollection<KadiUserMongoData>
         const foundUser = await this.mongoFindByAttribute("email", emailQuery);
         if (foundUser) {
             return this.kadiUserFrom(foundUser);
-        }
-        else {
+        } else {
             return null;
         }
     }
@@ -75,9 +83,8 @@ class KadiUserCollection extends MongoStoredObjectCollection<KadiUserMongoData>
         const emailTaken = await this.userWithEmailExists(loginDetails.email);
         if (usernameTaken || emailTaken) {
             throw new CredentialsTakenError(usernameTaken, emailTaken);
-        }
-        else {
-            return this.addNewUser({...loginDetails})
+        } else {
+            return this.addNewUser({ ...loginDetails });
         }
     }
 
@@ -115,16 +122,21 @@ class KadiUserCollection extends MongoStoredObjectCollection<KadiUserMongoData>
     async addGuestForUser(userOrId: OrId<KadiUser>, newGuestNick: string): Promise<Player> {
         const newGuest = await PlayerCollection().create(newGuestNick);
         await this.mongoDbClientCollection!.findOneAndUpdate(
-            {_id: this.idFromRecordOrId(userOrId)},
-            {$push: {guests: newGuest.getId()}});
+            { _id: this.idFromRecordOrId(userOrId) },
+            { $push: { guests: newGuest.getId() } }
+        );
         return newGuest;
     }
 
-    async deleteGuestFromUser(userOrId: OrId<KadiUser>, guestOrGuestId: OrId<Player>): Promise<Player> {
+    async deleteGuestFromUser(
+        userOrId: OrId<KadiUser>,
+        guestOrGuestId: OrId<Player>
+    ): Promise<Player> {
         const deletedGuest = await PlayerCollection().delete(this.idFromRecordOrId(guestOrGuestId));
         await this.mongoDbClientCollection!.findOneAndUpdate(
-            {_id: this.idFromRecordOrId(userOrId)},
-            {$pull: {guests: this.idFromRecordOrId(deletedGuest)}});
+            { _id: this.idFromRecordOrId(userOrId) },
+            { $pull: { guests: this.idFromRecordOrId(deletedGuest) } }
+        );
         return deletedGuest;
     }
 
@@ -133,8 +145,8 @@ class KadiUserCollection extends MongoStoredObjectCollection<KadiUserMongoData>
         return Promise.all<Player>(
             guestIdList.map(async (guestId) => {
                 return await PlayerCollection().read(guestId);
-            }
-        ));
+            })
+        );
     }
 
     async getMainPlayerForUser(userOrId: OrId<KadiUser>): Promise<Player> {
@@ -147,50 +159,56 @@ class KadiUserCollection extends MongoStoredObjectCollection<KadiUserMongoData>
         return Promise.all<SavedGame>(
             savedGameIds.map(async (savedGameId) => {
                 return await SavedGameCollection().read(savedGameId);
-            }
-        ));
+            })
+        );
     }
 
-    async addGameForUser(userOrId: OrId<KadiUser>, submission: ProcessedGameSubmission): Promise<SavedGame> {
+    async addGameForUser(
+        userOrId: OrId<KadiUser>,
+        submission: ProcessedGameSubmission
+    ): Promise<SavedGame> {
         const newGame = await SavedGameCollection().create(submission);
         await this.mongoDbClientCollection!.findOneAndUpdate(
-            {_id: this.idFromRecordOrId(userOrId)},
-            {$push: {savedGames: newGame.getId()}});
+            { _id: this.idFromRecordOrId(userOrId) },
+            { $push: { savedGames: newGame.getId() } }
+        );
         return newGame;
     }
 
-    async updateAccountStats(userOrId: OrId<KadiUser>, gameResults: (PlayerGameResults & {outcome: OutcomeType})[], rulesetUsedOrId: OrId<Ruleset>): Promise<void> {
+    async updateAccountStats(
+        userOrId: OrId<KadiUser>,
+        gameResults: (PlayerGameResults & { outcome: OutcomeType })[],
+        rulesetUsedOrId: OrId<Ruleset>
+    ): Promise<void> {
         const userId = this.idFromRecordOrId(userOrId);
-        const rulesetUsed = rulesetUsedOrId instanceof Ruleset ? rulesetUsedOrId : await RulesetCollection().read(rulesetUsedOrId);
+        const rulesetUsed =
+            rulesetUsedOrId instanceof Ruleset
+                ? rulesetUsedOrId
+                : await RulesetCollection().read(rulesetUsedOrId);
         const accountStatsMongoData = (await this.mongoRead(userId)).accountStats;
         const accountStatsObject = new AccountStats(accountStatsMongoData);
         accountStatsObject.updateStats(gameResults, rulesetUsed);
         this.mongoUpdate({
             id: userId,
-            accountStats: accountStatsObject.getData()
+            accountStats: accountStatsObject.getData(),
         });
     }
 
     async getAllStatsForUser(userOrId: OrId<KadiUser>): Promise<StatsListing> {
-        const players = [...(await this.getAllGuestsForUser(userOrId)), await this.getMainPlayerForUser(userOrId)];
-        const playerStats = players.map(player => ({
+        const players = [
+            ...(await this.getAllGuestsForUser(userOrId)),
+            await this.getMainPlayerForUser(userOrId),
+        ];
+        const playerStats = players.map((player) => ({
             nick: player.getNick(),
             playerId: player.getId(),
-            stats: player.getStats()
+            stats: player.getStats(),
         }));
-        const accountStatsMongoData = (await this.mongoRead(this.idFromRecordOrId(userOrId))).accountStats;
+        const accountStatsMongoData = (await this.mongoRead(this.idFromRecordOrId(userOrId)))
+            .accountStats;
         const accountStats = new AccountStats(accountStatsMongoData);
-        return {pStats: playerStats, accStats: accountStats};
+        return { pStats: playerStats, accStats: accountStats };
     }
 }
 
-export interface StatsListing {
-    accStats: AccountStats;
-    pStats: {
-        nick: string,
-        playerId: ActiveRecordId,
-        stats: PlayerStats
-    }[];
-}
-
-export default KadiUserCollection.getInstance;
\ No newline at end of file
+export default KadiUserCollection.getInstance;
diff --git a/src/ObjectCollections/MongoStoredObjectCollection.ts b/src/ObjectCollections/MongoStoredObjectCollection.ts
index a474093..bd5b800 100644
--- a/src/ObjectCollections/MongoStoredObjectCollection.ts
+++ b/src/ObjectCollections/MongoStoredObjectCollection.ts
@@ -2,6 +2,7 @@ import mongo from "mongodb";
 import {tryQuery} from "../database";
 import {InvalidIdError, MongoError} from "../errors";
 import ActiveRecord, {ActiveRecordId} from "../Objects/ActiveRecord";
+import {FilterQuery} from "mongoose";
 
 
 abstract class MongoStoredObjectCollection<IRawData extends {id: ActiveRecordId}> {
@@ -37,6 +38,22 @@ abstract class MongoStoredObjectCollection<IRawData extends {id: ActiveRecordId}
         });
     }
 
+    protected async mongoFindBy(query: FilterQuery<any>): Promise<IRawData[]> {
+        return tryQuery(async () => {
+            const results = await this.mongoDbClientCollection!.find(query).toArray();
+            if (results.length > 0) {
+                results.forEach(result => {
+                    result.id = result._id;
+                    result._id = undefined;
+                });
+                return results;
+            }
+            else {
+                return [];
+            }
+        });
+    }
+
     protected async mongoFindByAttribute(attribute: string, value: any): Promise<IRawData | null> {
         return tryQuery(async () => {
             const result = await this.mongoDbClientCollection!.findOne({[attribute]: value});
diff --git a/src/ObjectCollections/PlayerCollection.ts b/src/ObjectCollections/PlayerCollection.ts
index 4d7992c..d34ca83 100644
--- a/src/ObjectCollections/PlayerCollection.ts
+++ b/src/ObjectCollections/PlayerCollection.ts
@@ -68,5 +68,4 @@ class PlayerCollection extends MongoStoredObjectCollection<PlayerMongoData> {
     }
 }
 
-
 export default PlayerCollection.getInstance;
\ No newline at end of file
diff --git a/src/ObjectCollections/RulesetCollection.ts b/src/ObjectCollections/RulesetCollection.ts
index 9426656..2d3cb69 100644
--- a/src/ObjectCollections/RulesetCollection.ts
+++ b/src/ObjectCollections/RulesetCollection.ts
@@ -1,10 +1,14 @@
 import MongoStoredObjectCollection from "./MongoStoredObjectCollection";
-import {DEFAULT_RULESET, DEFAULT_RULESET_NAME, RulesetSchema} from "../rulesets";
-import {getMongoObjectCollection} from "../database";
+import {
+    DEFAULT_RULESET,
+    DEFAULT_RULESET_NAME,
+    RulesetSchema,
+} from "../rulesets";
+import { getMongoObjectCollection } from "../database";
 import Ruleset from "../Objects/Ruleset";
-import {ActiveRecordId} from "../Objects/ActiveRecord";
+import { ActiveRecordId } from "../Objects/ActiveRecord";
 
-type RulesetMongoData = RulesetSchema & {id: ActiveRecordId};
+type RulesetMongoData = RulesetSchema & { id: ActiveRecordId };
 
 class RulesetCollection extends MongoStoredObjectCollection<RulesetMongoData> {
     private static instance?: RulesetCollection;
@@ -23,19 +27,33 @@ class RulesetCollection extends MongoStoredObjectCollection<RulesetMongoData> {
         this.mongoDbClientCollection = getMongoObjectCollection("rulesets");
     }
 
-    private async rulesetFrom(data: RulesetMongoData): Promise<Ruleset> {
+    private rulesetFrom(data: RulesetMongoData): Ruleset {
         return new Ruleset(data.id, data);
     }
 
+    async create(rulesetSchema: RulesetSchema): Promise<Ruleset> {
+        const newRuleset = await this.mongoCreate(rulesetSchema);
+        return this.rulesetFrom(newRuleset);
+    }
+
     async read(id: ActiveRecordId): Promise<Ruleset> {
         if (id === DEFAULT_RULESET_NAME) {
             return new Ruleset(DEFAULT_RULESET_NAME, DEFAULT_RULESET);
-        }
-        else {
+        } else {
             const foundRuleset = await this.mongoRead(id);
             return this.rulesetFrom(foundRuleset);
         }
     }
+
+    async getAllRulesets(): Promise<Ruleset[]> {
+        const rulesets = await this.mongoFindBy({});
+        return [
+            ...rulesets.map((ruleset) =>
+                this.rulesetFrom(ruleset as RulesetMongoData)
+            ),
+            await this.read(DEFAULT_RULESET_NAME),
+        ];
+    }
 }
 
-export default RulesetCollection.getInstance;
\ No newline at end of file
+export default RulesetCollection.getInstance;
diff --git a/src/Objects/AccountStats.ts b/src/Objects/AccountStats.ts
index a166625..6eef04f 100644
--- a/src/Objects/AccountStats.ts
+++ b/src/Objects/AccountStats.ts
@@ -1,34 +1,21 @@
-import {RulesetSchema} from "../rulesets";
-import {AccountStatsMongoData, OutcomeType, PlayerGameResults} from "./DefaultStatsMongoData";
-import {UpdateError} from "../errors";
-import StatsUpdater from "./StatsUpdater";
+import { RulesetSchema } from "../rulesets";
+import { AccountStatsMongoData, OutcomeType, PlayerGameResults } from "./DefaultStatsMongoData";
+import { UpdateError } from "../errors";
+import StatsUpdater, { PlayerGameResultsWithOutcomes } from "./StatsUpdater";
 import Ruleset from "./Ruleset";
 
 class AccountStats {
-    private data: AccountStatsMongoData;
-    private readonly updater: StatsUpdater;
+    private readonly data: AccountStatsMongoData;
     constructor(data: AccountStatsMongoData) {
         this.data = data;
-        this.updater = new StatsUpdater();
-        this.updater.use(data);
     }
 
-    use(data: AccountStatsMongoData) {
-        this.data = data;
-        this.updater.use(data);
-    }
-
-    updateStats(playerGameResults: (PlayerGameResults & {outcome: OutcomeType})[], ruleset: Ruleset): void {
-        if (this.data) {
-            for (const playerGameResult of playerGameResults) {
-                this.updater.updateStats(playerGameResult, ruleset);
-            }
-            this.data.gamesPlayed += 1;
-        }
-        else {
-            throw new UpdateError(`Cannot update without data! Call the use() method to hydrate the updater with data 
-                to analyse.`);
+    updateStats(playerGameResults: PlayerGameResultsWithOutcomes[], ruleset: Ruleset): void {
+        const updater = new StatsUpdater(this.data, ruleset);
+        for (const playerGameResult of playerGameResults) {
+            updater.updateStats(playerGameResult);
         }
+        this.data.gamesPlayed += 1;
     }
 
     getData(): AccountStatsMongoData {
@@ -36,4 +23,4 @@ class AccountStats {
     }
 }
 
-export default AccountStats;
\ No newline at end of file
+export default AccountStats;
diff --git a/src/Objects/DefaultStatsMongoData.ts b/src/Objects/DefaultStatsMongoData.ts
index f5b64f9..a886ea9 100755
--- a/src/Objects/DefaultStatsMongoData.ts
+++ b/src/Objects/DefaultStatsMongoData.ts
@@ -22,9 +22,14 @@ export interface RulesetStatsMongoData {
     losses: number;
     grandTotal: TotalFieldStatsMongoData;
 }
-export interface BlockStatsMongoData {
+export type BlockStatsMongoData = BonusBlockStatsMongoData | NoBonusBlockStatsMongoData;
+export interface BonusBlockStatsMongoData {
+    cellStats: Record<string, CellStatsMongoData>;
+    timesHadBonus: number;
+    total: TotalFieldStatsMongoData;
+}
+export interface NoBonusBlockStatsMongoData {
     cellStats: Record<string, CellStatsMongoData>;
-    timesHadBonus?: number;
     total: TotalFieldStatsMongoData;
 }
 export interface BaseCellStatsMongoData {
@@ -133,7 +138,7 @@ function defaultBlockStatsMongoData(cellSchemas: Record<string, CellDef>, hasBon
     }
 }
 
-function defaultRulesetStatsMongoData(ruleset: RulesetSchema): RulesetStatsMongoData {
+export function defaultRulesetStatsMongoData(ruleset: RulesetSchema): RulesetStatsMongoData {
     const blockStatsRecord: Record<string, BlockStatsMongoData> = {};
     for (const blockLabel in ruleset.blocks) {
         blockStatsRecord[blockLabel] = defaultBlockStatsMongoData(ruleset.blocks[blockLabel].cells, ruleset.blocks[blockLabel].hasBonus);
diff --git a/src/Objects/PlayerStats.ts b/src/Objects/PlayerStats.ts
index 787abd6..6465828 100644
--- a/src/Objects/PlayerStats.ts
+++ b/src/Objects/PlayerStats.ts
@@ -1,24 +1,16 @@
-import {RulesetSchema} from "../rulesets";
-import {OutcomeType, PlayerGameResults, PlayerStatsMongoData} from "./DefaultStatsMongoData";
-import StatsUpdater from "./StatsUpdater";
+import {PlayerStatsMongoData} from "./DefaultStatsMongoData";
+import StatsUpdater, {PlayerGameResultsWithOutcomes} from "./StatsUpdater";
 import Ruleset from "./Ruleset";
 
 class PlayerStats {
-    private data: PlayerStatsMongoData;
-    private readonly updater: StatsUpdater;
+    private readonly data: PlayerStatsMongoData;
     constructor(data: PlayerStatsMongoData) {
         this.data = data;
-        this.updater = new StatsUpdater();
-        this.updater.use(data);
     }
 
-    use(data: PlayerStatsMongoData) {
-        this.data = data;
-        this.updater.use(data);
-    }
-
-    updateStats(playerGameResults: PlayerGameResults & {outcome: OutcomeType}, ruleset: Ruleset): void {
-        this.updater.updateStats(playerGameResults, ruleset);
+    updateStats(playerGameResults: PlayerGameResultsWithOutcomes, ruleset: Ruleset): void {
+        const updater = new StatsUpdater(this.data, ruleset);
+        updater.updateStats(playerGameResults);
         this.data.gamesPlayed += 1;
     }
 
diff --git a/src/Objects/Ruleset.ts b/src/Objects/Ruleset.ts
index 8f1aeab..1009c71 100644
--- a/src/Objects/Ruleset.ts
+++ b/src/Objects/Ruleset.ts
@@ -1,5 +1,7 @@
 import {BlockDef, CellDef, RulesetSchema} from "../rulesets";
 import ActiveRecord, {ActiveRecordId} from "./ActiveRecord";
+import {FieldType} from "../enums";
+import {CellLocation} from "./ScoreCalculator";
 
 export class Ruleset implements ActiveRecord {
     constructor(
@@ -27,9 +29,13 @@ export class Ruleset implements ActiveRecord {
         return Object.assign({}, this.schema.blocks[blockId].cells);
     }
 
-    getSchemaJSON(): RulesetSchema {
+    getSchema(): RulesetSchema {
         return Object.assign({}, this.schema);
     }
+
+    getCellFieldTypeByLocation(cellLocation: CellLocation): FieldType {
+        return this.getCellsInBlock(cellLocation.blockId)[cellLocation.cellId].fieldType;
+    }
 }
 
 export default Ruleset;
\ No newline at end of file
diff --git a/src/Objects/StatsUpdater.ts b/src/Objects/StatsUpdater.ts
index 421269a..3f668e8 100644
--- a/src/Objects/StatsUpdater.ts
+++ b/src/Objects/StatsUpdater.ts
@@ -1,49 +1,59 @@
-import ScoreCalculator, {ScoreCardJSONRepresentation} from "./ScoreCalculator";
-import {UpdateError} from "../errors";
-import {FieldType} from "../enums";
+import ScoreCalculator, { CellLocation, ScoreCardJSONRepresentation } from "./ScoreCalculator";
+import { UpdateError } from "../errors";
+import { FieldType } from "../enums";
 import {
+    BaseCellStatsMongoData,
     BaseStatsMongoData,
     BestableFieldStatsMongoData,
+    BlockStatsMongoData,
+    BonusBlockStatsMongoData,
     BoolFieldStatsMongoData,
     CellStatsMongoData,
+    defaultRulesetStatsMongoData,
     OutcomeType,
     PlayerGameResults,
     RulesetStatsMongoData,
-    TotalFieldStatsMongoData
+    TotalFieldStatsMongoData,
 } from "./DefaultStatsMongoData";
 import Ruleset from "./Ruleset";
+import { BonusBlockDef } from "../rulesets";
+
+export type PlayerGameResultsWithOutcomes = PlayerGameResults & { outcome: OutcomeType };
 
 class StatsUpdater {
-    private data?: BaseStatsMongoData;
-    private validationRuleset?: Ruleset;
-    private calculator?: ScoreCalculator;
-    private currentStatsObject?: RulesetStatsMongoData;
-    constructor() {
+    private data: BaseStatsMongoData;
+    private validationRuleset: Ruleset;
+    private calculator: ScoreCalculator;
+    private statsByRuleset: RulesetStatsMongoData;
+    constructor(data: BaseStatsMongoData, validationRuleset: Ruleset) {
+        this.data = data;
+        this.validationRuleset = validationRuleset;
+        this.calculator = new ScoreCalculator(validationRuleset);
+        this.statsByRuleset = this.getStatsByRuleset();
+    }
+
+    private getStatsByRuleset(): RulesetStatsMongoData {
+        if (!this.data.statsByRuleset[this.validationRuleset.getId().toString()]) {
+            this.data.statsByRuleset[
+                this.validationRuleset.getId().toString()
+            ] = defaultRulesetStatsMongoData(this.validationRuleset.getSchema());
+        }
+        return this.data.statsByRuleset[this.validationRuleset.getId().toString()];
     }
 
     use(data: BaseStatsMongoData) {
         this.data = data;
     }
 
-    updateStats(playerGameResults: PlayerGameResults & {outcome: OutcomeType}, ruleset: Ruleset): void {
-        if (this.data) {
-            this.validationRuleset = ruleset;
-            this.calculator = new ScoreCalculator(ruleset);
-            this.calculator.hydrateWithJSON(playerGameResults as ScoreCardJSONRepresentation);
-            this.currentStatsObject = this.data.statsByRuleset[ruleset.getId().toString()];
-            for (const blockId in ruleset.getBlocks()) {
-                this.updateBlockStats(blockId);
-            }
-            this.updateTotalFieldStats(this.currentStatsObject.grandTotal, this.calculator.getTotal());
-            this.currentStatsObject.wins += Number(playerGameResults.outcome === OutcomeType.win);
-            this.currentStatsObject.draws += Number(playerGameResults.outcome === OutcomeType.draw);
-            this.currentStatsObject.runnerUps += Number(playerGameResults.outcome === OutcomeType.runnerUp);
-            this.currentStatsObject.losses += Number(playerGameResults.outcome === OutcomeType.loss);
-        }
-        else {
-            throw new UpdateError(`Cannot update without data! Call the use() method to hydrate the updater with data 
-                to analyse.`);
+    updateStats(playerGameResults: PlayerGameResultsWithOutcomes): void {
+        for (const blockId in this.validationRuleset.getBlocks()) {
+            this.updateBlockStats(blockId);
         }
+        this.updateTotalFieldStats(this.statsByRuleset.grandTotal, this.calculator.getTotal());
+        this.statsByRuleset.wins += Number(playerGameResults.outcome === OutcomeType.win);
+        this.statsByRuleset.draws += Number(playerGameResults.outcome === OutcomeType.draw);
+        this.statsByRuleset.runnerUps += Number(playerGameResults.outcome === OutcomeType.runnerUp);
+        this.statsByRuleset.losses += Number(playerGameResults.outcome === OutcomeType.loss);
     }
 
     private updateTotalFieldStats(statsObject: TotalFieldStatsMongoData, total: number) {
@@ -53,43 +63,55 @@ class StatsUpdater {
     }
 
     private updateBlockStats(blockId: string) {
-        if (this.currentStatsObject) {
-            const blockStats = this.currentStatsObject.blockStats[blockId];
-            this.updateTotalFieldStats(blockStats.total, this.calculator!.getBlockSubTotalById(blockId));
-            if (this.calculator!.blockWithIdHasBonus(blockId)) {
-                blockStats.timesHadBonus! += 1;
-            }
-            for (const cellId in this.validationRuleset!.getBlocks()[blockId].cells) {
-                this.updateCellStatsByIds({cellId, blockId});
-            }
+        const blockStats = this.statsByRuleset.blockStats[blockId];
+        this.updateTotalFieldStats(blockStats.total, this.calculator.getBlockSubTotalById(blockId));
+        if (this.isBonusBlockStats(blockStats)) {
+            blockStats.timesHadBonus += 1;
+        }
+        for (const cellId in this.validationRuleset.getBlocks()[blockId].cells) {
+            this.updateCellStatsByLocation({ cellId, blockId });
         }
     }
 
-    private updateCellStatsByIds(ids: {cellId: string, blockId: string}) {
-        const cellStats = this.getCellStatsByIds({...ids, rulesetId: this.validationRuleset!.getId().toString()});
-        const cellFieldType = this.validationRuleset?.getBlocks()[ids.blockId].cells[ids.cellId].fieldType;
-        const cellScore = this.calculator!.getCellScoreByLocation({...ids});
+    private updateCellStatsByLocation(location: CellLocation) {
+        const cellStats = this.getCellStatsByLocation(location);
+        const cellFieldType = this.validationRuleset.getCellFieldTypeByLocation(location);
+        const cellScore = this.calculator.getCellScoreByLocation(location);
         cellStats.runningTotal += cellScore;
         if (cellScore > 0 && cellFieldType === FieldType.bool) {
             (cellStats as BoolFieldStatsMongoData).total += 1;
-        }
-        else if (cellFieldType === FieldType.multiplier || FieldType.superkadi || FieldType.number) {
-            const bestableStats = (cellStats as BestableFieldStatsMongoData);
-            if (bestableStats.best < cellScore) {
-                bestableStats.best = cellScore;
-            }
-            else if (bestableStats.worst > cellScore) {
-                bestableStats.worst = cellScore
+        } else if (this.isBestableCell(cellStats, cellFieldType)) {
+            if (cellStats.best < cellScore) {
+                cellStats.best = cellScore;
+            } else if (cellStats.worst > cellScore) {
+                cellStats.worst = cellScore;
             }
         }
-        if (this.calculator!.cellAtLocationIsStruck({...ids})) {
+        if (this.calculator.cellAtLocationIsStruck({ ...location })) {
             cellStats.timesStruck += 1;
         }
     }
 
-    private getCellStatsByIds(ids: {cellId: string, blockId: string, rulesetId: string}): CellStatsMongoData {
-        return this.data!.statsByRuleset[ids.rulesetId].blockStats[ids.blockId].cellStats[ids.cellId];
+    private getCellStatsByLocation(location: CellLocation): CellStatsMongoData {
+        return this.statsByRuleset.blockStats[location.blockId].cellStats[location.cellId];
+    }
+
+    private isBonusBlockStats(
+        blockStats: BlockStatsMongoData
+    ): blockStats is BonusBlockStatsMongoData {
+        return blockStats.hasOwnProperty("timesHadBonus");
+    }
+
+    private isBestableCell(
+        cellStats: BaseCellStatsMongoData,
+        fieldType: FieldType
+    ): cellStats is BestableFieldStatsMongoData {
+        return (
+            fieldType === FieldType.multiplier ||
+            fieldType === FieldType.superkadi ||
+            fieldType === FieldType.number
+        );
     }
 }
 
-export default StatsUpdater;
\ No newline at end of file
+export default StatsUpdater;
diff --git a/src/Routers/apiRouter.ts b/src/Routers/apiRouter.ts
index 6019b33..bbaa4b4 100755
--- a/src/Routers/apiRouter.ts
+++ b/src/Routers/apiRouter.ts
@@ -25,5 +25,7 @@ router.post("/games", requireAuthenticated, statsController.saveGame);
 //Stats
 router.get("/stats", requireAuthenticated, statsController.getStats);
 router.get("/ruleset/:id", rulesetController.getRuleset);
+router.post("/ruleset/", requireAuthenticated, rulesetController.addRuleset);
+router.get("/rulesets/", requireAuthenticated, rulesetController.getAllRulesets);
 
 export default router;
\ No newline at end of file