The Apocalyptic One Two is a platformer with puzzle and action elements. The world is reshaping itself as the matter that is not lit is also not solid.
Sometimes you have to figure out how to proceed in this complex world and sometimes run as fast as you can as the whole world is collapsing. When you finally get to emit light and create shadows yourself you are faced with a real challenge.
Even after completing the game, the fun doesn't have to end there because it is also possible to create your own levels and even whole episodes.