When loaded, the UI is visibly broken but otherwise functions normally.
There's an unfinished version of textures from level 8 left in a file named _level.ngn. The Windows version is the only version of the game where this debugging feature was left in the final version. This feature can help you in some points of the game, like the boss battles or the speed challenges. You can also press more keys simultaneously to play frame by frame. While in the pause menu, every time you press the pause key again, the game will advance a frame without exiting the menu.
