An epic bug hunt featuring a unique blend of co-op play and squad-level tactics. With your friends, form a squad of four distinct IAF Marine classes. Plan your attack using an unlockable arsenal of weapons with countless loadout configurations against a wide variety of aliens. Blaze your way through an overrun, off-world colony, eradicating the alien infestation in environments ranging from the icy planet's surface, to a subterranean lava-flooded mining facility.
Worth downloading and playing, but the lack of mod-map download support (for while joining a server) is astounding as this game is supported by the company that made Team Fortress 2. The gameplay is solid, but the campaign is often easily finished. Most levels are incredibly short, and as I said, getting mod ones that are longer is a great deal more difficult than one would expect.
Also, some of us would have liked the option to view in -first person-.
So, good for a freebie game. Needs some modders to help tune it up to full power though.