SupCom is a game of tremendous ambition that only manages to live up to part of it. If it has a fatal flaw, particularly for co-op play, it is that the AI is easily mastered by a decent human player, almost regardless of setting. I routinely played this with two friends for quite some time, facing off against a variety of combinations of 3 AI players. However, this really just limits the longevity of the game, as you will probably find the AI to be an acceptable opponent for some time. Playing with other people really shines when players choose different methodologies that complement one another. It's certainly worth picking up for anyone who has ever been an RTS fan and there is still a good community of players even now, so finding someone to play with shouldn't be a challenge.