Counter-Strike: Global Offensive
Counter-Strike players have a word for people who play other competitive online shooters, and that word is scrubs. This is a game that encourages – demands, even – mastery, not only of weapons but of maps, tactics, and team dynamics.
It’s a team- and objectives-based game, where you battle to control areas, arm or disarm a bomb, rescue or secure hostages, or just shoot the hell out of each other (there is a deathmatch mode, but it’s well down the list of most-played game modes).
Like Team Fortress 2, Counter-Strike: Global Offensive supports cross-platform play, so you can totally ice that guy down the hall who keeps yammering on and on about “PC Master Race.”