Excellent game 5/5 But Id like these thing added
1. Nerf Ninjas
2. "reset skills" button
3. As soon as you click the upgrade it closes the towers menu very annoying when upgrading a lot of towers
4. HOTKEYS!!
5. More levels or a ∞ waves level
6. Upgrade all button
5/5 Better than Desktop TD pro + Gemcraft.
My favorite thing is that you have a chance to save your gem after they get in the base.
BUT! I would like some badges , but hopefully i wont have to redo the game to get them.
 "Boxhead: 2Play Rooms"){kind=icon}
 "Math Squares"){kind=icon}
 "The Space Game"){kind=icon}
 "Cursed Treasure: Don't Touch My Gems!"){kind=icon}
 "Morningstar"){kind=icon}
6 years later, badges are finally live! It would've taken even longer to add them if this comment didn't have so many upvotes, though.