diff --git a/src/game/Game.test.ts b/src/game/Game.test.ts
index 1e2676e..8a0c7fb 100644
--- a/src/game/Game.test.ts
+++ b/src/game/Game.test.ts
@@ -9,28 +9,29 @@ describe("GameState", () => {
     ]
 
     const unrestrictedBuffer = 999
+    const unlimitedTime = 999 * 1000
 
     test("getting size works", () => {
-        expect((new Game(["00"], [["AA"]], unrestrictedBuffer)).size).toEqual(1)
+        expect((new Game(["00"], [["AA"]], unrestrictedBuffer, unlimitedTime)).size).toEqual(1)
         expect((new Game([
                             "00", "01",
                             "10", "11",
-                         ], [], unrestrictedBuffer)).size).toEqual(2)
+                         ], [], unrestrictedBuffer, unlimitedTime)).size).toEqual(2)
     });
 
     test("getting cell works", () => {
-        const game = new Game(threeByThreeMatrix, [["AA"]], unrestrictedBuffer);
+        const game = new Game(threeByThreeMatrix, [["AA"]], unrestrictedBuffer, unlimitedTime);
         expect(game.getCell(0, 2)).toEqual("02")
     });
 
     describe("picking", () => {
         test("starts with free pick", () => {
-            const game = new Game([], [["AA"]], 1);
+            const game = new Game([], [["AA"]], 1, unlimitedTime);
             expect(game.state).toEqual({selectionMode: SelectionMode.FreePick})
         });
 
         test("picking cells works", () => {
-            const game = new Game(threeByThreeMatrix, [["AA"]], unrestrictedBuffer);
+            const game = new Game(threeByThreeMatrix, [["AA"]], unrestrictedBuffer, unlimitedTime);
             game.pick(0, 0);
             expect(game.state).toEqual({selectionMode: SelectionMode.RowPick, column: 0});
             expect(() => game.pick(0, 2)).toThrow();
@@ -39,7 +40,7 @@ describe("GameState", () => {
         });
 
         test("picking outside of range fails", () => {
-            const game = new Game(threeByThreeMatrix, [], unrestrictedBuffer);
+            const game = new Game(threeByThreeMatrix, [], unrestrictedBuffer, unlimitedTime);
             expect(() => game.pick(-1, 0)).toThrow();
             expect(() => game.pick(0, -1)).toThrow();
             expect(() => game.pick(3, 0)).toThrow();
@@ -48,7 +49,7 @@ describe("GameState", () => {
 
         test("picking fills buffer, fulfills sequence", () => {
             const simpleSequence = ["00", "10", "20"]
-            const game = new Game(threeByThreeMatrix, [simpleSequence], unrestrictedBuffer);
+            const game = new Game(threeByThreeMatrix, [simpleSequence], unrestrictedBuffer, unlimitedTime);
             expect(game.getSequences()).toEqual([{sequence: simpleSequence, numberOfFulfilled: 0}])
             game.pick(0, 0);
             expect(game.buffer).toEqual(["00"]);
@@ -61,7 +62,7 @@ describe("GameState", () => {
                     "AA", "AA", "BB",
                     "BB", "CC", "AA",
                     "CC", "CC", "CC",
-                ], [sequence], unrestrictedBuffer);
+                ], [sequence], unrestrictedBuffer, unlimitedTime);
             expect(game.getSequences()).toEqual([{sequence: sequence, numberOfFulfilled: 0}])
             game.pick(0, 0);
             expect(game.getSequences()).toEqual([{sequence: sequence, numberOfFulfilled: 1}])
@@ -82,7 +83,7 @@ describe("GameState", () => {
                     "AA", "AA", "BB",
                     "BB", "CC", "AA",
                     "CC", "CC", "CC",
-                ], [["AA", "BB", "CC"]], 3)
+                ], [["AA", "BB", "CC"]], 3, unlimitedTime)
             game.pick(0, 0)
             game.pick(2, 0)
             game.pick(2, 2)
@@ -95,7 +96,7 @@ describe("GameState", () => {
                     "AA", "AA", "BB",
                     "BB", "CC", "AA",
                     "CC", "CC", "CC",
-                ], [["AA", "BB", "CC"]], 3)
+                ], [["AA", "BB", "CC"]], 3, unlimitedTime)
             game.pick(0, 0)
             game.pick(1, 0)
             game.pick(1, 2)
@@ -103,4 +104,51 @@ describe("GameState", () => {
             expect(() => game.pick(2, 2)).toThrow();
         })
     });
+
+    describe("time management", () => {
+        let currentTimeProgress: number
+
+        beforeEach(() => {
+            jest.useFakeTimers()
+            currentTimeProgress = 0
+            Date.now = jest.fn(() => {
+                return currentTimeProgress
+            })
+        })
+
+        function fakeTimeProgress(ms: number) {
+            currentTimeProgress += ms
+            jest.advanceTimersByTime(ms)
+        }
+
+        test("loosing through timeout works", () => {
+            const game = new Game([
+                "AA", "AA", "BB",
+                "BB", "CC", "AA",
+                "CC", "CC", "CC",
+            ], [["AA"]], 3, 10_000)
+            fakeTimeProgress(1_000)
+            expect(game.remainingMilliseconds).toEqual(9_000)
+            fakeTimeProgress(1_000)
+            expect(game.remainingMilliseconds).toEqual(8_000)
+            fakeTimeProgress(8_000)
+            expect(game.state).toEqual(EndState.Lost)
+            expect(game.remainingMilliseconds).toEqual(0)
+            fakeTimeProgress(1_000)
+            expect(game.remainingMilliseconds).toEqual(0)
+        })
+
+        test("clock stops when game is won", () => {
+            const game = new Game([
+                "AA", "AA", "BB",
+                "BB", "CC", "AA",
+                "CC", "CC", "CC",
+            ], [["AA"]], 3, 10_000)
+            fakeTimeProgress(1_000)
+            game.pick(0, 0)
+            expect(game.remainingMilliseconds).toEqual(9_000)
+            fakeTimeProgress(1_000)
+            expect(game.remainingMilliseconds).toEqual(9_000)
+        })
+    })
 });
diff --git a/src/game/Game.ts b/src/game/Game.ts
index f56d28c..dc00b60 100644
--- a/src/game/Game.ts
+++ b/src/game/Game.ts
@@ -80,9 +80,30 @@ export class Game {
     state: State = {selectionMode: SelectionMode.FreePick}
     public readonly size: number
     public readonly buffer: string[] = []
+    private readonly timeoutInterval: ReturnType<typeof setTimeout>
+    private readonly startTimeTimeStamp: number
+    private endTimestamp: number | null = null
 
-    constructor(public readonly matrix: string[], private readonly sequences: string[][], public readonly maxBufferLength: number) {
+    constructor(
+        public readonly matrix: string[],
+        private readonly sequences: string[][],
+        public readonly maxBufferLength: number,
+        public readonly timeout: number,
+    ) {
         this.size = Math.sqrt(matrix.length)
+        this.timeoutInterval = setTimeout(() => {
+                this.state = EndState.Lost
+                this.stopClock()
+            },
+            this.timeout)
+        this.startTimeTimeStamp = Date.now()
+    }
+
+    get remainingMilliseconds(): number {
+        if (this.endTimestamp) {
+            return this.timeout - (this.endTimestamp - this.startTimeTimeStamp)
+        }
+        return this.timeout - (Date.now() - this.startTimeTimeStamp)
     }
 
     getCell(row: number, column: number) {
@@ -112,11 +133,18 @@ export class Game {
         })
     }
 
+    private stopClock(): void {
+        clearTimeout(this.timeoutInterval)
+        this.endTimestamp = Date.now()
+    }
+
     private checkEndGame(): void {
         const isSequenceFulfilled = (sequence: Sequence) => sequence.sequence.length === sequence.numberOfFulfilled
         if (this.getSequences().every(isSequenceFulfilled)) {
+            this.stopClock()
             this.state = EndState.Won
         } else {
+            this.stopClock()
             if (this.buffer.length >= this.maxBufferLength) {
                 this.state = EndState.Lost
             }