The demo itself is a pretty solid amount of gameplay as far as demos go. Those of you that choose to download the thing will have the opportunity to play through one tutorial mission, two campaign missions, and one skirmish map on four difficulty settings. Depending on the difficulty you play the game at, it could take an hour or more to get through the tutorial and game missions. Skirmish adds quite a bit of life to the party as well. There's only one map, but it'll help you all get to know the game.