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It's a fine game, and definitely a fun experience. High replay value, since it took me about 3 times to "hire" all possible heroes and fully upgrade them. However, the first few missions are extremely annoying. I don't know why, but the maps on those could easily give you a headache even after 30~40mins playing. About mission 7 on ward, it's gone. That's why every time I play again, I pick a save instead of starting from the beginning.