Minecraft wiki entry for Things_not_to_do, associated text: If you accidentally fall into the void, forcibly quit the game IMMEDIATELY, using Alt + F4 or ending task via Task Manager (unless you are playing on a server). Minecraft auto-saves once every 45 seconds, so unless you get unlucky, you find yourself right back where you started from. On Java Edition, holding F3 + C might work [verify], but it’s more risky as it takes five seconds for the keystrokes to crash the game, in which time you could've died already.