It's fun at times but the inconsistent physics and lack of information given to the player (manually having to figure out how two gears interact with each other, for example whether they stick or not) can make playing frustrating. I do wish the gears were more different from each other than just the inside pattern but thats a small nitpick (since each gear had the same edges I assumed all of them would stick like the first one introduced). The levels involving having to throw the gear were the most fun to me, especially when I found ways to avoid using the sticky gears. The beginning art was also pretty good.