diff --git a/src/algo.ts b/src/algo.ts
index 95ceea1..90dd560 100644
--- a/src/algo.ts
+++ b/src/algo.ts
@@ -6,9 +6,6 @@ import { randRange } from './utils'
 
 type HistoryType = { a: number; b: number; op: OperatorType }[]
 
-export const operations = reactive<Operation[]>([])
-export const plaquettes = ref<Plaquette[]>([])
-
 export function isOperationResultValid(op: Operation): boolean {
   return (
     !!op.operator &&
@@ -24,11 +21,7 @@ export function isOperationInvalid(op: Operation): boolean {
 }
 
 export function isOperationReady(op: Operation): boolean {
-  return (
-    !!op.operator &&
-    !!op.left &&
-    !!op.right
-  )
+  return !!op.operator && !!op.left && !!op.right
 }
 
 export function getEmptyOperation(): Operation {
diff --git a/src/components/OperationsList.vue b/src/components/OperationsList.vue
index a68bfb1..9850f4b 100644
--- a/src/components/OperationsList.vue
+++ b/src/components/OperationsList.vue
@@ -29,7 +29,9 @@
           </div>
 
           <!-- RESULT -->
-          <PlaquetteBox :dynamic-size="true" class="w-[3.2em] border-none">
+          <PlaquetteBox
+            :dynamic-size="true"
+            class="w-[3.2em] h-8 border-none">
             <IconSad v-if="isOperationInvalid(op)" />
             <span
               v-else-if="
@@ -37,8 +39,10 @@
               ">
               {{ operate(op.operator, op.left.value, op.right.value) }}
             </span>
-            <IconQuestion v-else />
+            <span v-else>?</span>
           </PlaquetteBox>
+
+          <!-- UNDO -->
           <button
             class="ml-8"
             @click="undoOperation(i)">
@@ -60,15 +64,13 @@ import {
   isOperationInvalid,
   isOperationResultValid,
   operate,
-  operations,
-  plaquettes,
 } from '@/algo'
+import { GameState, gameState } from '@/globals'
+import { operations, plaquettes } from '@/store'
 import { Operation } from '@/types'
-import IconQuestion from '~icons/bx/bx-question-mark'
 import IconSad from '~icons/bx/bx-sad'
 import IconUndo from '~icons/bx/bx-undo'
 
-import NumberBox from './common/NumberBox.vue'
 import PlaquetteBox from './common/PlaquetteBox.vue'
 
 const transDelay = 100
@@ -78,9 +80,9 @@ function canOperationBeDeleted(op: Operation): boolean {
 }
 
 function undoOperation(index: number): void {
+  if (gameState.value !== GameState.Playing) return
   const l = operations.length
   for (let i = operations.length - 1; i >= index; --i) {
-    console.log(i)
     let popped: Operation
     if (i === index) {
       popped = operations[index]
diff --git a/src/components/common/PlaquetteBox.vue b/src/components/common/PlaquetteBox.vue
index afe9978..9cbc1f7 100644
--- a/src/components/common/PlaquetteBox.vue
+++ b/src/components/common/PlaquetteBox.vue
@@ -1,19 +1,21 @@
 <template>
-  <div
+  <Component
+    :is="is"
     class="flex overflow-hidden justify-center font-bold rounded border border-stone-600 transition-all"
     :class="[textSize]">
     <span
       class="self-center text-center"
       ref="content"><slot /></span>
-  </div>
+  </Component>
 </template>
 
 <script setup lang="ts">
 import { ref, watch } from 'vue'
 
 const props = withDefaults(
-  defineProps<{ dynamicSize: boolean }>(),
+  defineProps<{ dynamicSize: boolean; is?: string }>(),
   {
+    is: 'div',
     dynamicSize: false,
   },
 )
diff --git a/src/globals.ts b/src/globals.ts
index 0680a23..91b2b33 100644
--- a/src/globals.ts
+++ b/src/globals.ts
@@ -1,3 +1,5 @@
+import { ref } from 'vue'
+
 export const operators = ['+', '-', 'x', '/'] as const
 export const pool = [
   1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 25, 50, 75, 100,
@@ -8,3 +10,5 @@ export enum GameState {
   Lost,
   Won,
 }
+
+export const gameState = ref(GameState.Playing)
diff --git a/src/store.ts b/src/store.ts
new file mode 100644
index 0000000..788a3ab
--- /dev/null
+++ b/src/store.ts
@@ -0,0 +1,6 @@
+import { reactive, ref } from 'vue'
+
+import { Operation, Plaquette } from './types'
+
+export const operations = reactive<Operation[]>([])
+export const plaquettes = ref<Plaquette[]>([])
diff --git a/src/views/GameView.vue b/src/views/GameView.vue
index 47a684f..6817d05 100644
--- a/src/views/GameView.vue
+++ b/src/views/GameView.vue
@@ -20,11 +20,12 @@
       class="grid grid-cols-6 grid-rows-2 gap-2 justify-center px-2 mx-auto max-w-sm">
       <TransitionGroup name="slide_left">
         <PlaquetteBox
+          is="button"
+          @click="selectNumber(item)"
           :dynamic-size="true"
-          class="col-start-auto h-11"
+          class="h-11"
           :class="{ 'text-stone-600 border-stone-600': !item.free }"
           :style="{ transitionDelay: `${initDelay * i}ms` }"
-          @click="selectNumber(item)"
           v-for="(item, i) in plaquettes"
           :key="i">
           {{ item.value }}
@@ -45,7 +46,19 @@
 
     <div class="my-4 mx-auto max-w-sm border-b" />
 
+    <!-- List of Operations -->
     <OperationsList />
+
+    <div class="flex justify-evenly items-center mt-8">
+      <Transition name="slide_up">
+        <button
+          v-if="gameState === GameState.Won"
+          class="p-2 rounded border"
+          @click="reboot">
+          Rejouer
+        </button>
+      </Transition>
+    </div>
   </div>
 </template>
 
@@ -58,21 +71,17 @@ import {
   isOperationResultValid,
   isSolvable,
   operate,
-  operations,
-  plaquettes,
 } from '@/algo'
 import NumberBox from '@/components/common/NumberBox.vue'
 import PlaquetteBox from '@/components/common/PlaquetteBox.vue'
 import OperationsList from '@/components/OperationsList.vue'
-import { GameState, operators, pool } from '@/globals'
+import { GameState, gameState, operators, pool } from '@/globals'
+import { operations, plaquettes } from '@/store'
 import { OperatorType, Plaquette } from '@/types'
 import { randItem, randRange } from '@/utils'
 
 const result = ref(0)
 const initDelay = ref(100)
-const currentState = ref(GameState.Playing)
-
-operations.push(getEmptyOperation())
 
 const currentOperation = computed(() => operations[operations.length - 1])
 
@@ -84,11 +93,12 @@ watch(
         free: true,
         value: operate(op.operator!, op.left!.value, op.right!.value),
       }
-      plaquettes.value.push(op.result)
       if (op.result.value === result.value) {
         // Winner
+        gameState.value = GameState.Won
       }
-      else {
+      else if (operations.length < 5) {
+        plaquettes.value.push(op.result)
         operations.push(getEmptyOperation())
       }
     }
@@ -113,12 +123,14 @@ function selectNumber(p: Plaquette): void {
 }
 
 function selectOperator(o: OperatorType): void {
+  if (gameState.value !== GameState.Playing) return
   currentOperation.value.operator = o
 }
 
 const difficultyLevel = randItem([1, 1, 1, 1, 1, 1, 2, 2, 2, 3])
 
-onMounted(() => {
+function reboot(): void {
+  gameState.value = GameState.Playing
   do {
     // Find a problem
     // result.value = randRange(101, 1000)
@@ -132,6 +144,11 @@ onMounted(() => {
           return randRange(250, 1000)
       }
     })()
+    // Reset Operations list
+    operations.splice(0)
+    operations.push(getEmptyOperation())
+
+    // Generate result and plaquettes
     plaquettes.value = []
     const poolCopy = [...pool]
     for (let i = 0; i < 6; ++i) {
@@ -147,5 +164,9 @@ onMounted(() => {
     )
   )
   plaquettes.value.sort((a, b) => a.value - b.value)
+}
+
+onMounted(() => {
+  reboot()
 })
 </script>