Top games by current player count
Current Players Peak Today   Game
 
460,807 904,165   Dota 2
152,258 606,091   Counter-Strike: Global Offensive
34,063 58,658   Team Fortress 2
32,716 58,022   DARK SOULS III
23,064 42,242   Sid Meier's Civilization V
21,293 45,571   ARK: Survival Evolved
18,948 35,227   Warframe
18,016 39,350   Grand Theft Auto V
16,830 61,253   Football Manager 2016
16,602 29,901   Fallout 4

Steam Hardware & Software Survey
Steam Stats