diff --git a/src/algo.ts b/src/algo.ts
index 90dd560..70ad931 100644
--- a/src/algo.ts
+++ b/src/algo.ts
@@ -1,8 +1,5 @@
-import { reactive, ref, watch } from 'vue'
-
-import { operators, pool } from './globals'
-import { Operation, OperatorType, Plaquette } from './types'
-import { randRange } from './utils'
+import { operators } from './globals'
+import { Operation, OperatorType } from './types'
 
 type HistoryType = { a: number; b: number; op: OperatorType }[]
 
diff --git a/src/components/OperationsList.vue b/src/components/OperationsList.vue
index 38abf8f..8557da9 100644
--- a/src/components/OperationsList.vue
+++ b/src/components/OperationsList.vue
@@ -72,11 +72,11 @@ import {
   isOperationResultValid,
   operate,
 } from '@/algo'
+import { operations, plaquettes } from '@/game-state'
 import { GameState, gameState } from '@/globals'
-import { operations, plaquettes } from '@/store'
 import { Operation } from '@/types'
-import IconSad from '~icons/bx/bx-sad'
 import IconUndo from '~icons/bx/bx-undo'
+import IconSad from '~icons/ph/smiley-sad'
 
 import PlaquetteBox from './common/PlaquetteBox.vue'
 
diff --git a/src/components/common/PlaquetteBox.vue b/src/components/common/PlaquetteBox.vue
index 9cbc1f7..c394938 100644
--- a/src/components/common/PlaquetteBox.vue
+++ b/src/components/common/PlaquetteBox.vue
@@ -13,7 +13,7 @@
 import { ref, watch } from 'vue'
 
 const props = withDefaults(
-  defineProps<{ dynamicSize: boolean; is?: string }>(),
+  defineProps<{ dynamicSize?: boolean; is?: string }>(),
   {
     is: 'div',
     dynamicSize: false,
diff --git a/src/store.ts b/src/game-state.ts
similarity index 52%
rename from src/store.ts
rename to src/game-state.ts
index 1891ed6..0f067c8 100644
--- a/src/store.ts
+++ b/src/game-state.ts
@@ -1,9 +1,9 @@
 import { computed, reactive, ref } from 'vue'
 
-import { isOperationReady } from './algo'
+import { getEmptyOperation, isOperationReady } from './algo'
 import { Operation, Plaquette } from './types'
 
-export const operations = reactive<Operation[]>([])
+export const operations = reactive<Operation[]>([getEmptyOperation()])
 export const plaquettes = ref<Plaquette[]>([])
 
 export const result = ref(0)
@@ -13,9 +13,11 @@ export const currentOperation = computed(
 )
 
 export const isEndGame = computed(
-  () => operations.length === 5 && isOperationReady(currentOperation.value),
+  () =>
+    (operations.length === 5 && isOperationReady(currentOperation.value)) ||
+    isResultPerfect.value,
 )
 
 export const isResultPerfect = computed(
-  () => currentOperation.value.result!.value === result.value,
+  () => !!operations.some(o => o.result?.value === result.value),
 )
diff --git a/src/globals.ts b/src/globals.ts
index 31568dd..936a6d1 100644
--- a/src/globals.ts
+++ b/src/globals.ts
@@ -1,9 +1,16 @@
 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,
-] as const
+
+export const pools = {
+  1: [1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 25],
+  2: [1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 25, 50, 75],
+  3: [
+    1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 25, 50, 75,
+    100,
+  ],
+  4: [2, 2, 3, 3, 5, 5, 7, 11, 13, 17, 19, 23],
+} as const
 
 export enum GameState {
   Undefined = 0,
diff --git a/src/locales/fr.json b/src/locales/fr.json
index b8ac2b6..06f8680 100644
--- a/src/locales/fr.json
+++ b/src/locales/fr.json
@@ -1,6 +1,10 @@
 {
   "playAgain": "Rejouer",
-  "endGame.victoryLabel": "Bien joué !",
-  "endGame.failureLabel": "Presque",
-  "startGame": "Démarrer"
+  "endGame.victoryLabel": "Le compte est bon !",
+  "endGame.failureLabel": "Dommage...<br>Une autre partie ?",
+  "startGame": "Démarrer",
+  "easy": "facile",
+  "medium": "moyen",
+  "hard": "difficile",
+  "impossible": "☠"
 }
diff --git a/src/views/GameView.vue b/src/views/GameView.vue
index 949ee19..f165668 100644
--- a/src/views/GameView.vue
+++ b/src/views/GameView.vue
@@ -10,7 +10,8 @@
       :class="{
         'text-green-400': difficultyLevel === 1,
         'text-amber-400': difficultyLevel === 2,
-        'text-red-400': difficultyLevel === 3,
+        'text-orange-400': difficultyLevel === 3,
+        'text-red-500': difficultyLevel === 4,
       }">
       {{ result }}
     </NumberBox>
@@ -24,8 +25,23 @@
         <div>
           Combinez les nombres imposés afin de trouver le résultat ci-dessus, ou
           de vous en approcher le plus possible.<br>
-          Le compteur démarre quand vous cliquez sur le bouton.<br>Partagez vos
-          meilleurs temps !
+          Le compteur démarre quand vous cliquez sur le bouton.<br>Partagez
+          vos meilleurs temps !
+        </div>
+
+        <div
+          class="my-4 font-bold"
+          :class="{
+            'text-green-400': difficultyLevel === 1,
+            'text-amber-400': difficultyLevel === 2,
+            'text-orange-400': difficultyLevel === 3,
+            'text-red-500': difficultyLevel === 4,
+          }">
+          Niveau de difficulté :
+          <span v-if="difficultyLevel < 4">{{ difficultyLabel }}</span>
+          <IconSkull
+            class="inline"
+            v-else />
         </div>
 
         <button
@@ -58,13 +74,14 @@
     <Transition name="slide_up">
       <div v-if="gameIsRunning">
         <div class="flex gap-2 justify-center my-4">
-          <NumberBox
+          <PlaquetteBox
+            is="button"
             class="aspect-square w-[1.5em] text-2xl"
             @click="selectOperator(item)"
             v-for="(item, i) in operators"
             :key="i">
             {{ item }}
-          </NumberBox>
+          </PlaquetteBox>
         </div>
 
         <!-- Divider -->
@@ -78,9 +95,13 @@
     <Transition name="slide_up">
       <div
         v-if="isEndGame"
-        class="flex flex-row justify-evenly items-center mt-8">
-        <span v-if="isResultPerfect">{{ t('endGame.victoryLabel') }}</span>
-        <span v-else>{{ t('endGame.failureLabel') }}</span>
+        class="flex flex-row justify-evenly items-center mx-auto mt-8 max-w-sm">
+        <span
+          v-if="isResultPerfect"
+          v-html="t('endGame.victoryLabel')" />
+        <span
+          v-else
+          v-html="t('endGame.failureLabel')" />
         <button
           class="p-2 rounded border"
           @click="reboot">
@@ -105,7 +126,6 @@ import {
 import NumberBox from '@/components/common/NumberBox.vue'
 import PlaquetteBox from '@/components/common/PlaquetteBox.vue'
 import OperationsList from '@/components/OperationsList.vue'
-import { GameState, gameState, operators, pool } from '@/globals'
 import {
   currentOperation,
   isEndGame,
@@ -113,9 +133,11 @@ import {
   operations,
   plaquettes,
   result,
-} from '@/store'
+} from '@/game-state'
+import { GameState, gameState, operators, pools } from '@/globals'
 import { OperatorType, Plaquette } from '@/types'
 import { randItem, randRange } from '@/utils'
+import IconSkull from '~icons/ph/skull'
 
 const { t } = useI18n() // call `useI18n`, and spread `t` from  `useI18n` returning
 
@@ -132,6 +154,7 @@ const shownPlaquettes = computed(() =>
 
 onMounted(() => {
   reboot()
+  gameState.value = GameState.Waiting
 })
 
 watch(
@@ -142,7 +165,7 @@ watch(
         free: true,
         value: operate(op.operator!, op.left!.value, op.right!.value),
       }
-      if (operations.length < 5) {
+      if (operations.length < 5 && !isEndGame.value) {
         plaquettes.value.push(op.result)
         operations.push(getEmptyOperation())
       }
@@ -157,6 +180,7 @@ function startGame(): void {
 }
 
 function selectNumber(p: Plaquette): void {
+  if (isEndGame.value) return
   initDelay.value = 0
 
   const op = currentOperation.value
@@ -173,39 +197,60 @@ function selectNumber(p: Plaquette): void {
 }
 
 function selectOperator(o: OperatorType): void {
-  if (gameState.value !== GameState.Playing) return
+  if (isEndGame.value) return
   currentOperation.value.operator = o
 }
 
-const difficultyLevel = randItem([1, 1, 1, 1, 1, 1, 2, 2, 2, 3])
+const difficultyLevel = ref<1 | 2 | 3 | 4>(1)
+
+const difficultyLabel = computed(() => {
+  switch (difficultyLevel.value) {
+    case 1:
+      return t('easy')
+    case 2:
+      return t('medium')
+    case 3:
+      return t('hard')
+    default:
+      return t('impossible')
+  }
+})
 
 function reboot(): void {
-  gameState.value = GameState.Waiting
+  gameState.value = GameState.Playing
   do {
     // Find a problem
     // result.value = randRange(101, 1000)
+    difficultyLevel.value = randItem([1, 1, 1, 1, 2, 2, 2, 2, 3, 3, 4])
     result.value = (() => {
-      switch (difficultyLevel) {
+      switch (difficultyLevel.value) {
         case 1:
-          return randRange(101, 25)
+          return randRange(80, 200)
         case 2:
-          return randRange(251, 500)
-        default:
-          return randRange(501, 1000)
+          return randRange(201, 400)
+        case 3:
+          return randRange(401, 1000)
+        case 4:
+          return randRange(50, 1000)
       }
     })()
+    // result.value = 29
     // Reset Operations list
     operations.splice(0)
     operations.push(getEmptyOperation())
 
     // Generate result and plaquettes
     plaquettes.value = []
-    const poolCopy = [...pool]
+    const poolCopy = [...pools[difficultyLevel.value]]
     for (let i = 0; i < 6; ++i) {
       const random = Math.floor(Math.random() * poolCopy.length)
       const el = poolCopy.splice(random, 1)[0]
       plaquettes.value.push({ value: el, free: true })
     }
+    // plaquettes.value = [4, 8, 10, 25, 50, 100].map(value => ({
+    //   free: true,
+    //   value,
+    // }))
     // Solve it
   } while (
     !isSolvable(