Top games by current player count
Current Players Peak Today   Game
 
838,413 1,080,658   Dota 2
327,981 605,131   Counter-Strike: Global Offensive
47,227 99,424   XCOM 2
45,905 62,274   Team Fortress 2
43,020 52,129   Grand Theft Auto V
39,314 73,404   Football Manager 2016
33,286 53,453   Rust
31,569 56,595   Sid Meier's Civilization V
27,902 53,214   ARK: Survival Evolved
26,244 46,464   Garry's Mod

Steam Hardware & Software Survey
Steam Stats