SCP: Operation Descent is a first-person survival horror game by Etherium Apex. You find yourself at the entrance of a dark stairwell, containing many surreal secrets within its depths. You are a Class-D personnel, sent by the SCP Foundation, an organization dedicated to containing and researching anomalous beings, objects and locations. Your assignment is to recover an artifact brought into SCP-087 by a previous Class-D personnel.
The game is based loosely on SCP-087 and the SCP Foundation, expanded to include new areas outside the stairwell. A mysterious entity lurks in the darkness, and your only options are to run or hide. If you get stuck in the game, check out the video walkthrough and gameplay for the game.