I've enjoyed the game but I really wish the Treasure Chests were a little more common I haven't seen one in over 30 levels and I tend to stick around a level for a lot of kills past the ten required.
You know I hate to say this but this is literally a Puzzle & Dragon clone, I mean they even have nearly identical tutorials. By identical I mean that you even drag the element pieces in the same directions and they do the same things. Don't get me wrong I like Puzzle & Dragon and I would love a version for the PC but this is as shameless as a copy can get, honestly if this wasn't on a free to play site I could see major copyright infringement, (also Puzzle & Dragon is free too).
 "Clicker Heroes"){kind=icon}
 "Monsters & Dungeons"){kind=icon}
 "Robot Dinosaurs That Shoot Beams When They Roar"){kind=icon}
 "Viricide"){kind=icon}