Call of Duty: MW2 (2009) - Multiplayer 2.254 hours
Call of Duty: Black Ops III - Multiplayer 1.301 hours
Call of Duty: Black Ops II - Multiplayer 703 hours
Call of Duty: Advanced Warfare - Multiplayer 662 hours
Call of Duty: Modern Warfare 3 - Multiplayer 509 hours
Call of Duty: Black Ops - Multiplayer 432 hours
Call of Duty: Ghosts - Multiplayer 392 hours

Counter-Strike: 1.3 - 1.6 '99 - Multiplayer 920 hours
Counter-Strike: Source - Multiplayer 650 hours
Counter-Strike: Global Offensive - Multiplayer 300+ hours

World of Warcraft [worldofwarcraft.blizzard.com] - 6.096 hours
Asphalt 9: Legends - 871 hours
Quake III Arena '99 - Multiplayer 1300 hours
Tom Clancy's Rainbow Six Siege - 431 hours
DOOM 2016 - Multiplayer 209 hours
Rocket League - Multiplayer 408 hours

Titanfall - Multiplayer 101 hours
Titanfall 2 - Multiplayer 144 hours
Crysis 2 - Multiplayer 125 hours
Overwatch [overwatch.blizzard.com] - Multiplayer 221 hours [overwatch.blizzard.com]

Battlefield™: Hardline - Multiplayer 112 hours
Battlefield 3 - Multiplayer 92 hours
Battlefield 4 - Multiplayer 78 hours
Medal of Honor - Multiplayer 137 hours