No revenue estimate for PSN — its rating/review counts don't calibrate to sales the way Steam's do. Reviews and prices only.

Observation

Observation is a sci-fi thriller uncovering what happened to Dr. Emma Fisher, and the crew of her mission, through the lens of the station’s artificial intelligence S.A.M. Players assume the role of S.A.M. by operating the station’s control systems, cameras, and tools to assist Emma in discovering what is happening to the station, the vanished crew, and S.A.M. himself.