Includes: Counter-Strike: Source, Day of Defeat: Source, Half-Life 2: Deathmatch Counter-Strike: SourceTHE NEXT INSTALLMENT OF THE WORLD'S # 1 ONLINE ACTION GAMECounter-Strike: Source blends Counter-Strike's award-winning teamplay action with the advanced technology of Source™ technology. Featuring state of the art graphics, all new sounds, and introducing physics, Counter-Strike: Source is a must-have for every action gamer. Day of Defeat: SourceDay of Defeat offers intense online action gameplay set in Europe during WWII. Assume the role of infantry, sniper or machine-gunner classes, and more. DoD:S features enhanced graphics and sounds design to leverage the power of Source, Valve's new engine technology. Half-Life 2: DeathmatchFast multiplayer action set in the Half-Life 2 universe! HL2's physics adds a new dimension to deathmatch play. Play straight deathmatch or try Combine vs. Resistance teamplay. Toss a toilet at your friend today!