Warstone TD is a Tower Defense game with lite elements of strategy, RPG, and city building thrown in. I enjoy TD games and it does enough things differently to make the combat stand out. Then you start to get into the other elements of the game and you realize there is a lot of mechanics in the game all working together to advance the story and give you breaks from the TD sides of things. They aren't complex or groundbreaking but it is fun to do them and change the pace. The game does give you the option to only do the TD side of things and put the rest on auto pilot if you desire. I think this game is price just right at $15 for fans of Tower Defense games. If your not sure then wait on a sale and grab it, I don't think you will be disappointed.
Here is my first look video if you'd like to see the beginning of the game.