If you are a big fan of tower defense, you will get a kick out of the game. You’ll probably have fun with it for a bit, and if you make sure to just have fun until you’re bored, step away, and then come back to it a couple months later? It’s probably going to keep your affection. But it’s perhaps not as fully-featured as it being a standalone game might suggest. While Flash is gone, it doesn’t mean you can just port games that worked in that format all into being standalone titles. Terrorformer TD has a fun gameplay loop for brief jaunts, but it goes from excitement to tedium faster than I would like.