SCP: Observer is an adventure game that offers a frightening experience to the players. Take on the role of a maintenance engineer trapped within the confines of a security room, desperately fighting for survival. Your main tasks involve managing the emergency power supply, diligently monitoring the facility's camera system to identify threats, and strategically blocking the paths of approaching horrors. Hope arrives in the form of the mobile task force unit Nine-Tailed Fox, on their way to rescue you and other survivors.

With a range of official scenarios and customizable difficulty levels, this game grants you complete control over your experience. Delve into two distinct zones: the Light Containment Zone and the Heavy Containment Zone.

The Light Containment Zone is primarily used for containment and storage of lower-level SCP objects, while the Heavy Containment Zone is used for the containment of high-level SCP objects. The game features several SCPs, including SCP-035, SCP-049, SCP-079, SCP-096, SCP-106, SCP-173, SCP-939, and SCPEach SCP has unique abilities, and the players must use their wit to survive and escape the facility. The game offers official scenarios and customizable difficulty levels, giving players full control over their experience.