What a cool start to a game. The slow dripping away of black, and then you are in a totally black room with a single door showing the weird liminal space waiting on the other side. That is some solid game direction.
Did you make all these models yourself? They are really nice and consistent in style, and the untextured look makes them oddly eerie, which adds perfectly to the overall vibe of this game. Loved the quick playthrough, even though I got stuck trying to find a place for the bunny.