fun but not all that challenging. i don't like when i start playing a game and find out it's a demo afterwards. the marketing ploy cheapens the experience. it would be more forthright if it was labeled demo on the starting screen. would i buy it? meh maybe. i'd pay under a dollar. it is not challenging enough and lacks depth, but it's slightly amusing and has much potential. also you're demoing over half the levels so you may want to add at the least 50 more.