Extremely simple little click game. I basically just used one strategy for the entire game and only slightly modified it based on the world. I'm generally really bad at tower defense/strategy games in general, so the fact that I was able to beat this game without failing a level even once was insane to me and makes me think this one mostly coasts by on nostalgia. Granted, I only played the main campaign mode so if there's more to it than that maybe that's where people get their kicks. Definitely isn't a bad game by any stretch, just don't think it's particularly notable these days.