Amnesia the bunker is a FANTASTIC stand alone title that subtly incorporates amnesia lore into its main story.
You are a French soldier who wakes up alone in a bunker, after playing a short prologue. You spend your time free roaming the bunker trying to complete objectives that require attention to detail in some cases and brute force in other cases.
The whole time you’re fighting to keep the power on because the creature that stalks you hunts more regularly when the lights go out. If there’s a power outage and you’re nowhere near one of the only save points in the game, then good luck and have fun getting back.
The creature never stops stalking. However its spawns are randomly generated and can be influenced by factors such as power, noise and campaign milestones.
The game reminded me of alien isolation. Very scary game, very fun and 10/10 recommend. My only criticism is that it was far too short and I completed it within 1 day.