Great game full of strategy, has decent length and some replaybility. if you grind enough it gets pretty easy except some challenges. In my oppinion it is not better than royal squad or roayl warfare 1,2 but it is something new and it is interesting on its own. The premium is kinda worth it, it gives 6 more levels for something like 2 euros so yea go for it if you want to support the dev or have nothing else to spend money on, then go to kongregate. Anyway it is a decently good game and deserves giving it a try.