Current Players Peak Today Game 71,485 86,132 Counter-Strike: Source 56,169 60,553 Counter-Strike 20,268 21,886 Team Fortress 2 19,444 22,660 Football Manager 2009 15,485 16,580 Left 4 Dead 8,640 10,026 Empire: Total War 7,666 9,602 Condition Zero 6,132 6,313 Garry's Mod 5,075 6,939 Day of Defeat: Source 3,011 3,427 Warhammer 40,000: Dawn of War II 2,009 2,516 Half-Life 2: Deathmatch 1,654 1,900 Half-Life 2 1,517 1,895 Day of Defeat 1,210 1,442 America's Army 3 1,183 1,208 Plants Vs Zombies...