Well this is a bloody weird game. It is, sort of, a game about making a game. Only you play the game and the game keeps changing as you do. One minute it’s a platform game, then it’s a sideways scrolling shooter, then you’re in the dark, then you have to dodge stuff while not falling in holes. Weird, as I said.
In some ways it feels a bit like a Wario Ware game, only with the microgames somewhat longer (mostly) than 3 seconds each. If any more information than this is needed, then I can only suggest you play it yourself.