Top games by current player count
Current Players Peak Today   Game
 
999,952 999,952   Dota 2
438,578 605,131   Counter-Strike: Global Offensive
53,374 99,424   XCOM 2
52,867 62,274   Team Fortress 2
52,067 52,129   Grand Theft Auto V
46,198 73,404   Football Manager 2016
40,711 53,453   Rust
37,092 56,595   Sid Meier's Civilization V
35,327 53,214   ARK: Survival Evolved
32,492 46,464   Garry's Mod

Steam Hardware & Software Survey
Steam Stats