Indie game storeFree gamesFun gamesHorror games
Game developmentAssetsComics

The name of the game is GLITCH. Falling through the storage room and the gravity changing is not a bug.

Well, I saw the guide note and it just said to get a code but not mentioned how to enter it. So, I just took it as a bug (I checked the guide after trying  to enter). Also, a gamma slider would be bomb. *sips tea*