There's a missing flashing cube in one room - see screenshot. Also wondering if there are plans to implement throwing cubes diagonally? It might just be my emulator but it seems he can only throw cubes up/down/forward. Diagonal cube-throwing was part of a 2013 update to the PC game.
Sure enough, just entirely forgot that cube. Thanks.
As for the diagonal throwing, I played the original to death and the 2013 update felt odd to me with the diagonal tossing (and half-adjusted speed for 60fps) so I didn't really use it as a basis at all. If there's a lot of demand for it I could add it, it isn't a tremendous difficulty from a technical perspective.