SCP-173 is a concrete room with a "creature" inside. It will not move when it is in the sight of other creatures. However, as long as 173 is removed from sight, even for a blink of an eye, SCP-173

It would break the creature's cervical vertebrae and kill it on the spot.

In the game, the player plays the role of an experimenter. The containment device malfunctions and two other companions sacrifice on the spot, while he has to escape from the experimental base.

The main story of "SCP Foundation" revolves around a secret organization called "SCP Foundation (Special Containment Procedures Foundation, SCP Foundation)", which is dedicated to containing abnormal phenomena, events, individuals, etc. in the world, and is collectively known as "

Contained objects”.