@mogwai_poet Blue Prince was exactly my level of “weird dreamlike shit”, but I realize milage varies a lot. Also, therefore, the Maze book that BP is an homage to.

Antichamber is archetypical of this, I think.

Obsidian. Rhem. The Sexy Brutale? There's a lot of games that take place (or turn out to be taking place) in dream-worlds, but that's not exactly right.