Among the Sleep utilizes an automatic save system, meaning you don't need to manually save your game. The game saves your progress at key checkpoints throughout each chapter. These checkpoints are usually triggered after completing a significant objective, entering a new area, or after a major narrative event. You'll typically see a small icon appear on the screen, often a teddy bear symbol, to indicate that your progress has been saved.
While the auto-save system is convenient, it's important to be aware that you cannot save at any arbitrary point. If you need to stop playing, it's best to reach the next checkpoint to ensure your progress is recorded. If you quit the game before reaching a checkpoint, you will likely restart from the last successful save. This design choice encourages continuous play through narrative segments and maintains the game's immersive flow without interruption from manual save menus.