Great game, should have archer characters, maybe some dragons or something, or maybe characters move around a bit. And also, people don't rate it at 1/5 or 2/5 just because you never got it to load, it's proably your computer, not the game. Personally, I give it a 4/5.
It's not a bad game, but as you progress, you end up pretty much needing those other turrets, and as Dogdude84 said, it's pretty hard to fully use all three turrets.
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