Great game 5/5, but they should have made a faster setting. Also, this goes out to alot of people-- They purposely keep the "sell" or "remove" button out to make it more crucial to plan out all of your defenses. If you could sell, then maps like Frog Puddle wouldn't be unique and challenging. Personally, I think the game is as close to perfection as a Tower Defense game could get (which is pretty frickin close)