Call of Duty
Call of Duty is a first-person shooter series published by Activision and most of the games have been developed by Infinity Ward, Treyarch, and Sledgehammer Games.
The Call of Duty games were used in eSports, starting in 2006, alongside the game released at the time, Call of Duty 4: Modern Warfare. Over the years, the series has extended with releases such as Call of Duty: World at War, Call of Duty: Modern Warfare 2, Call of Duty: Black Ops, Call of Duty: Modern Warfare 3, Call of Duty: Black Ops II, and Call of Duty: Ghosts.
Players can compete in ladders or tournaments. The ladders are divided into several sub ladders such as: the singles ladder, doubles ladder, team ladder (3v3 – 6v6) and hardcore team ladder (3v3 – 6v6).