Top games by current player count
Current Players Peak Today   Game
 
471,799 877,970   Dota 2
444,042 555,426   Counter-Strike: Global Offensive
53,655 55,304   Football Manager 2016
46,169 55,006   Team Fortress 2
42,712 49,634   DARK SOULS III
40,015 44,660   ARK: Survival Evolved
39,534 40,400   Sid Meier's Civilization V
37,685 46,296   Rocket League
33,966 33,966   Rust
33,751 36,463   Garry's Mod

Steam Hardware & Software Survey
Steam Stats