diff --git a/back/volume/src/pong/dtos/GameCreationDtoValidated.ts b/back/volume/src/pong/dtos/GameCreationDtoValidated.ts
index ca8c3ae..3b55da4 100644
--- a/back/volume/src/pong/dtos/GameCreationDtoValidated.ts
+++ b/back/volume/src/pong/dtos/GameCreationDtoValidated.ts
@@ -3,9 +3,16 @@ import {
   ArrayMaxSize,
   ArrayMinSize,
   IsNotEmptyObject,
+  IsNumber,
   IsString,
+  Max,
+  Min,
   ValidateNested
 } from 'class-validator'
+import {
+  DEFAULT_BALL_INITIAL_SPEED,
+  DEFAULT_MAX_BALL_SPEED
+} from '../game/constants'
 import { MapDtoValidated } from './MapDtoValidated'
 
 export class GameCreationDtoValidated {
@@ -18,4 +25,14 @@ export class GameCreationDtoValidated {
   @ValidateNested()
   @Type(() => MapDtoValidated)
     map!: MapDtoValidated
+
+  @IsNumber()
+  @Min(DEFAULT_BALL_INITIAL_SPEED.x)
+  @Max(DEFAULT_MAX_BALL_SPEED.x)
+    initialBallSpeedX!: number
+
+  @IsNumber()
+  @Min(DEFAULT_BALL_INITIAL_SPEED.y)
+  @Max(DEFAULT_MAX_BALL_SPEED.y)
+    initialBallSpeedY!: number
 }
diff --git a/back/volume/src/pong/game/Ball.ts b/back/volume/src/pong/game/Ball.ts
index 544f075..a93b330 100644
--- a/back/volume/src/pong/game/Ball.ts
+++ b/back/volume/src/pong/game/Ball.ts
@@ -3,7 +3,6 @@ import { type Point, Rect } from './utils'
 import { type MapDtoValidated } from '../dtos/MapDtoValidated'
 import {
   DEFAULT_BALL_SIZE,
-  DEFAULT_BALL_INITIAL_SPEED,
   GAME_TICKS,
   DEFAULT_BALL_SPEED_INCREMENT,
   DEFAULT_MAX_BALL_SPEED
@@ -19,12 +18,12 @@ export class Ball {
 
   constructor (
     spawn: Point,
-    size: Point = DEFAULT_BALL_SIZE,
-    speed: Point = DEFAULT_BALL_INITIAL_SPEED.clone()
+    initialSpeed: Point,
+    size: Point = DEFAULT_BALL_SIZE.clone()
   ) {
     this.rect = new Rect(spawn, size)
-    this.speed = speed
-    this.initial_speed = speed.clone()
+    this.speed = initialSpeed.clone()
+    this.initial_speed = initialSpeed.clone()
     this.spawn = spawn.clone()
     this.indexPlayerScored = -1
     this.timeoutTime = 0
diff --git a/back/volume/src/pong/game/Game.ts b/back/volume/src/pong/game/Game.ts
index 7c3d3ee..16db48c 100644
--- a/back/volume/src/pong/game/Game.ts
+++ b/back/volume/src/pong/game/Game.ts
@@ -3,6 +3,7 @@ import { type Socket } from 'socket.io'
 import { Point, Rect } from './utils'
 import { Player } from './Player'
 import {
+  DEFAULT_BALL_INITIAL_SPEED,
   DEFAULT_BALL_SIZE,
   DEFAULT_PADDLE_SIZE,
   DEFAULT_WIN_SCORE,
@@ -22,6 +23,7 @@ export class Game {
   ball: Ball
   players: Player[] = []
   ranked: boolean
+  initialBallSpeed: Point
   waitingForTimeout: boolean
   gameStoppedCallback: (name: string) => void
 
@@ -32,7 +34,8 @@ export class Game {
     map: MapDtoValidated,
     gameStoppedCallback: (name: string) => void,
     private readonly pongService: PongService,
-    ranked: boolean
+    ranked: boolean,
+    initialBallSpeed: Point = DEFAULT_BALL_INITIAL_SPEED.clone()
   ) {
     this.id = randomUUID()
     this.timer = null
@@ -40,7 +43,11 @@ export class Game {
     this.waitingForTimeout = false
     this.map = map
     this.gameStoppedCallback = gameStoppedCallback
-    this.ball = new Ball(new Point(this.map.size.x / 2, this.map.size.y / 2))
+    this.initialBallSpeed = initialBallSpeed
+    this.ball = new Ball(
+      new Point(this.map.size.x / 2, this.map.size.y / 2),
+      initialBallSpeed
+    )
     for (let i = 0; i < uuids.length; i++) {
       this.addPlayer(sockets[i], uuids[i], names[i])
     }
@@ -92,7 +99,10 @@ export class Game {
 
   private start (): void {
     if (this.timer === null && this.players.length === 2) {
-      this.ball = new Ball(new Point(this.map.size.x / 2, this.map.size.y / 2))
+      this.ball = new Ball(
+        new Point(this.map.size.x / 2, this.map.size.y / 2),
+        this.initialBallSpeed
+      )
       this.players.forEach((p) => {
         void this.pongService.setInGame(p.name)
         p.newGame()
diff --git a/back/volume/src/pong/game/Games.ts b/back/volume/src/pong/game/Games.ts
index f93f760..fdd5efc 100644
--- a/back/volume/src/pong/game/Games.ts
+++ b/back/volume/src/pong/game/Games.ts
@@ -37,7 +37,11 @@ export class Games {
           map,
           this.deleteGame.bind(this, names[0]),
           this.pongService,
-          ranked
+          ranked,
+          new Point(
+            gameCreationDto.initialBallSpeedX,
+            gameCreationDto.initialBallSpeedY
+          )
         )
       )
       this.playerNameToGameIndex.set(names[0], this.games.length - 1)
diff --git a/back/volume/src/pong/game/MatchmakingQueue.ts b/back/volume/src/pong/game/MatchmakingQueue.ts
index d4514a5..a475dc6 100644
--- a/back/volume/src/pong/game/MatchmakingQueue.ts
+++ b/back/volume/src/pong/game/MatchmakingQueue.ts
@@ -1,6 +1,6 @@
 import { type Socket } from 'socket.io'
 import { type GameCreationDtoValidated } from '../dtos/GameCreationDtoValidated'
-import { DEFAULT_MAP_SIZE } from './constants'
+import { DEFAULT_BALL_INITIAL_SPEED, DEFAULT_MAP_SIZE } from './constants'
 import { type Games } from './Games'
 
 export class MatchmakingQueue {
@@ -48,7 +48,9 @@ export class MatchmakingQueue {
       map: {
         size: DEFAULT_MAP_SIZE,
         walls: []
-      }
+      },
+      initialBallSpeedX: DEFAULT_BALL_INITIAL_SPEED.x,
+      initialBallSpeedY: DEFAULT_BALL_INITIAL_SPEED.y
     }
     const ranked = true
 
diff --git a/back/volume/src/pong/pong.service.ts b/back/volume/src/pong/pong.service.ts
index 2c59d63..d64b78a 100644
--- a/back/volume/src/pong/pong.service.ts
+++ b/back/volume/src/pong/pong.service.ts
@@ -15,14 +15,23 @@ export class PongService {
     private readonly usersService: UsersService
   ) {}
 
-  async updateStats (player: User, i: number, result: Result, maxScore: number): Promise<void> {
+  async updateStats (
+    player: User,
+    i: number,
+    result: Result,
+    maxScore: number
+  ): Promise<void> {
     player.matchs++
     if (result.score[i] === maxScore) player.wins++
     else player.looses++
     player.winrate = (100 * player.wins) / player.matchs
   }
 
-  async updatePlayer (i: number, result: Result, maxScore: number): Promise<void> {
+  async updatePlayer (
+    i: number,
+    result: Result,
+    maxScore: number
+  ): Promise<void> {
     const player: User | null = result.players[i]
     if (player == null) return
     if (result.ranked) await this.updateStats(player, i, result, maxScore)
@@ -37,7 +46,11 @@ export class PongService {
     await this.usersService.save(player)
   }
 
-  async saveResult (players: Player[], ranked: boolean, maxScore: number): Promise<void> {
+  async saveResult (
+    players: Player[],
+    ranked: boolean,
+    maxScore: number
+  ): Promise<void> {
     const result = new Result()
     const ply = new Array<User | null>()
     ply.push(await this.usersService.findUserByName(players[0].name))
diff --git a/front/volume/src/components/Pong/GameCreation.svelte b/front/volume/src/components/Pong/GameCreation.svelte
index df9b7e3..d977778 100644
--- a/front/volume/src/components/Pong/GameCreation.svelte
+++ b/front/volume/src/components/Pong/GameCreation.svelte
@@ -1,6 +1,11 @@
 <script lang="ts">
   import { Map } from "./Map";
-  import { DEFAULT_MAP_SIZE, GAME_EVENTS } from "./constants";
+  import {
+    DEFAULT_BALL_INITIAL_SPEED,
+    DEFAULT_MAP_SIZE,
+    DEFAULT_MAX_BALL_SPEED,
+    GAME_EVENTS,
+  } from "./constants";
   import MapCustomization from "./MapCustomization.svelte";
   import type { GameCreationDto } from "./dtos/GameCreationDto";
   import { store } from "../../Auth";
@@ -10,11 +15,15 @@
   export let invitedUsername: string;
 
   let map: Map = new Map(DEFAULT_MAP_SIZE.clone(), []);
+  let initialBallSpeedX: number = DEFAULT_BALL_INITIAL_SPEED.x;
+  let initialBallSpeedY: number = DEFAULT_BALL_INITIAL_SPEED.y;
 
   function createGame() {
     const data: GameCreationDto = {
       playerNames: [$store.username, invitedUsername],
       map,
+      initialBallSpeedX,
+      initialBallSpeedY,
     };
     socket.emit(GAME_EVENTS.CREATE_GAME, data);
   }
@@ -27,6 +36,25 @@
     <button on:click={createGame}>
       Create game vs {invitedUsername}
     </button>
+    <div>
+      <span>Initial ball's speed (X): {initialBallSpeedX}</span>
+      <br />
+      <input
+        type="range"
+        bind:value={initialBallSpeedX}
+        min={DEFAULT_BALL_INITIAL_SPEED.x}
+        max={DEFAULT_MAX_BALL_SPEED.x}
+      />
+      <br />
+      <span>Initial ball's speed (Y): {initialBallSpeedY}</span>
+      <br />
+      <input
+        type="range"
+        bind:value={initialBallSpeedY}
+        min={DEFAULT_BALL_INITIAL_SPEED.y}
+        max={DEFAULT_MAX_BALL_SPEED.y}
+      />
+    </div>
     <MapCustomization {map} />
   </div>
 </div>
diff --git a/front/volume/src/components/Pong/dtos/GameCreationDto.ts b/front/volume/src/components/Pong/dtos/GameCreationDto.ts
index 6a04ee4..e88a2a0 100644
--- a/front/volume/src/components/Pong/dtos/GameCreationDto.ts
+++ b/front/volume/src/components/Pong/dtos/GameCreationDto.ts
@@ -3,4 +3,6 @@ import type { Map } from "../Map";
 export class GameCreationDto {
   playerNames: string[];
   map: Map;
+  initialBallSpeedX: number;
+  initialBallSpeedY: number;
 }