I'll start by saying that the demo on xBox Live is pretty short. It showcases the game but you don't really get a feel for how the game will ultimately play.
Initially the game seems like a similar premise to alot of other games. Aliens Invade, send in the marines. But there does seem to be a slight difference in how this game approaches the situation. Instead of the usual, “One man against the Alien Armada”, you work in the company of a three man fire-team. This is helpful, because it seems these aliens are tougher than the normal ones that take a bullet and fall down and die. Sometimes you need to bring all three of your guns to bear on one target to bring it down. This adds a degree of difficulty to the game as you need to keep your men in cover and still attacking one target to bring it down.
This brings up the second gameplay point I liked. Your squad will react to your orders. They wont go charging at an enemy who has superior numbers, but they will follow you if you choose to lead an attack against overwhelming odds. Simply put, your men work better depending on how well you lead. Demo breakdown:
Graphics: Definitely third generation here. Things look good, from the rain pinging off your gun to the explosions it looks good. Gameplay: I like what I see. It's a standard approach, zoom in, shoot, throw grenade, etc. But why change what ain't broken. Sound: Also pretty cool. From your men talking to you and each other, offering advice and criticism, to the sounds of the weapons things sound pretty good.
Overall I'm liking what I'm seeing. It looks better to me than Midway's other upcoming release: Hour of Victory.