This game is fun. Really fun. Stay-up-till-5-AM fun. I remember playing this at a friend's house when I was much younger, and it is just as addictive now. You can play many different game modes, with a ton of precreated maps and campaigns. You have six different hero types, each having their own units, advantages, and disadvantages. The maps can be huge, taking many game months to complete. This is in my opinion one of the top five games of all time.
