I hadn't realized it came out so long ago! It's gameplay is evergreen. Thinking of medium sized games, I think the original Orcs Must Die! would qualify as wel

I hadn't realized it came out so long ago! It's gameplay is evergreen. Thinking of medium sized games, I think the original Orcs Must Die! would qualify as well. It was a tight, solid experience. There aren't too many 3d tower defense type games that I'd put on a must-play list, but OMD is at the top.