Very good game, spent a good amount of time on it. Only thing I could say to improve would be to maybe add some more music so it creates a little difference, but it's not that important. You should think about putting this game onto a mobile app store, free at first to pull a few people in then put the price up a little then you could make a little bit of moolah! :D Nice game thoroughly enjoyed it!
Awesome. Its similar to Kingdom Rush one of my favorite games.
Interesting game, quite amusing and certainly made me spend more hours than I expected, which is exactly what I like about TD games, and games in general.
As it is, I find the game quite enjoyable. The difficulty system is excellent, something I've seen on a couple other games, and I did enjoy it there as well. Not locking XP to higher difficulty settings is also a good move that caters for casual and hardcore player alike.
Perhaps a sequel could be done, as I certainly would like to see a sequel, maybe with hero units (unique units) with a longer spawn time but with triggerable skills (magic/melee, depending on the hero).
Congrats on your work and I do hope you continue producing more and better, as this is a clear indication of your talent.
Since it's not graphically intense, it should run well for most Android phones. Make one for that market!
Awesome game. I've been playing it for days and I've finally got all of the diamond stars.
The only thing I'd change is the lack of medals. I've got all 56 in game badges, but no NG medals for my trouble.
Other than that the game is perfect!
Finally, a few reviewers seem to be annoyed that the developer has borrowed ideas from other games. Well yeah, it says that in the authors comments!