Zup! is a pretty simplistic game in which you have a stack of cubes and need to get the blue one to land on the green field to clear the level. This is accomplished by clicking red cubes that explode, thus making you rely on physics to win. It's an interesting concept, but the game really lacks on much of a puzzle element, since everything boils down to either clicking the right explosive or just timing correctly. The DLC puzzles (which are free) are a bit more interesting as they add a bit more gimmick reliance, but I don't really think this accomplishes much in the puzzle aspect overall.