Alien Swarm is an overhead view tactical shooter modification for Unreal Tournament 2004.

Set in a distant future, the players take the role of a Commander in the Interstellar Armed Forces. They must guide their squad of marines through Swarm infested colonies, overrun bases and outposts, to achieve a variety of objectives. Featuring Assault Rifles, Heat Tracking Guns, Sentry Guns, Flamethrowers and more.

The top down, tactical shooter can be played by a maximum of 6 players in a co-op style. (You can play 8 in total, but then the game gets a bit crowded so we made it 6 by default.)

Choose from eight marines, with different specialties - medical, technical, explosive or weapons specialists.

It features a single mission mode and a campaign. Fight off the Swarm to increase your skills and earn medals for extra skill points.

License: free

Additional System Requirements:

A full version of Unreal Tournament 2004 patched to version 3270 or higher is required to play.

The linux patch 3270 can be downloaded here: http://download.beyondunreal.com/fileworks.php/official/ut2004/ut2004-lnxpatch3270-1.tar.bz2

Or if you intend to run a server, you could use the free dedicated server package from http://unrealtournament.com/ut2004/downloads.php#Server