W.T.

W.T. is a first-person 3D escape adventure set in a mansion whose walls, floors and ceilings have no color. You explore its rooms and winding corridors, solving puzzles to find a way out and advance the story.

You begin in a room with one door. Beyond it, puzzles block the corridor: if you move forward without solving them, you return to where you started. Each puzzle has its own solution method and answer, and solving one leads to another set of puzzles farther along the corridor.