The game is awesome and worth a 5/5 but I can't say this is better than gemcraft, mainly because it has much more to offer in terms of lenght and variety. I felt that many possibilities had not been explored such as a way to counteract the extremely frustrating ninjas (a debuff spell maybe), the possibility of changing a terrain with a spell or that of buying a level up for the towers that see less enemys but I feel are important (both of which would add much to freedom and strategy). Also some special modes, such as survival, would be a nice addition. One last critic is that it felt unfinished, I would have liked a special champion in the last level or at least a congratulation screen. It's not much but I felt the lack of something special at the end. If the full potential of this game is explored in a sequel or a new version, it could really be the best Td game around.