Observation is coming in May, but only on the Epic Games Store
https://www.pcgamer.com/observation-is-coming-in-may-but-only-on-the-epic-games-store/
Observation, No Code's spooky sci-fi thriller, is only a couple of months away. The Stories Untold developer and publisher Devolver Digital announced the impending release with a flashy new story trailer, which you can watch above.
The news was also accompanied by the game vanishing from Steam. Now it's just coming to "PS4 and the Epic Games Store", so it looks like Epic got itself another exclusive. It's available for pre-order on the store now.