I love tower defence games, and this was an interesting one, at the beginning I wanted a fast forward because that's what most games have but the added mechanic that you have to fix them made it so I'm more into the game, because normally I would just sit and watch. It was fun upgrading stuff, but I found that I think the money broke and I had upgraded one tower to a high enough level that I probably could go on only with a single tower.
Other than that, I really liked it, I liked the healing mechanic!