diff --git a/src/main/index.ts b/src/main/index.ts
index 38b5c84..e81e33d 100644
--- a/src/main/index.ts
+++ b/src/main/index.ts
@@ -3,7 +3,7 @@ import { join } from 'path'
 import { setMainWindow } from './events'
 import { IPC, type UserSettings, type PlayOptions } from '../shared/ipc'
 import { login, logout, restoreSession, getCurrent } from './auth'
-import { play, stopGame } from './play'
+import { play, stopGame, isGameRunning } from './play'
 import { getPackMetaCached } from './modpack'
 import { getSettings, setSettings } from './settings'
 import { paths } from './paths'
@@ -35,6 +35,13 @@ function createWindow(): BrowserWindow {
 
   win.on('ready-to-show', () => win.show())
 
+  win.on('close', (e) => {
+    if (isGameRunning()) {
+      e.preventDefault()
+      win.hide()
+    }
+  })
+
   // Liens externes -> navigateur système.
   win.webContents.setWindowOpenHandler(({ url }) => {
     void shell.openExternal(url)
diff --git a/src/main/play.ts b/src/main/play.ts
index 9c11310..b2fa0ef 100644
--- a/src/main/play.ts
+++ b/src/main/play.ts
@@ -1,4 +1,5 @@
 import type { ChildProcess } from 'child_process'
+import { app, BrowserWindow } from 'electron'
 import { getCurrent } from './auth'
 import { fetchPackMeta } from './modpack'
 import { ensureJava } from './java'
@@ -47,6 +48,10 @@ export async function play(opts?: PlayOptions): Promise<void> {
     gameProcess = proc
     proc.on('close', () => {
       gameProcess = null
+      const allHidden = BrowserWindow.getAllWindows().every((w) => !w.isVisible())
+      if (allHidden) {
+        app.quit()
+      }
     })
   } catch (e) {
     emit.progress({ phase: 'error', message: (e as Error).message, progress: undefined })
@@ -60,3 +65,7 @@ export function stopGame(): boolean {
   gameProcess.kill()
   return true
 }
+
+export function isGameRunning(): boolean {
+  return gameProcess !== null
+}