The game is set in a containment site of The SCP Foundation, a secret organization dedicated to containing and researching creatures, items and places that threaten the normality of the world. You're thrown into the boots of a Class D, one of the Foundations disposable human guinea pigs. Unfortunately things hit the fan, a massive containment breach occurs and you end up alone in the darkness with the escaped entities roaming around the facility.

One of the key elements of the game is the randomly generated map - no playthrough is the same, and you can never know for sure what will happen next. There are plenty of obstacles to make your way out of the facility less pleasant. Smoke that makes you blink faster, locked doors that require a key card with a sufficient security clearance or a specific access code to open, timer switch controlled doors, not to mention all the escaped SCPs.

Your goal is to make it out alive. You can also attempt to search the facility for documents and other clues to figure out what led to the breach, and do your part in fixing the situation.