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.
Nitro Canister Case is a one map campaign for Alien Swarm created by Tien. The map is very hard with lots of ambushes. This is the original version with a fixed download link. Fully compatible with the original VPK, what means that you can connect to each other or to dedicated servers with no problems.