Alien Swarm BitTorrent Server
The Alien Swarm BitTorrent Server has been discontinued, but you can still download via HTTP.
Alien Swarm is an overhead view tactical shooter by Black Cat Games. 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.
GameTree Linux Wiki
The GameTree Linux Wiki aims to be a good reference library for people trying to run games with Cedega on Linux. You can find a good amount of games and their working status with Cedega described here, as well as help with common problems.