Professional Counter-Strike competition involves professional gamers competing in the first-person shooter game series Counter-Strike.

The original game, released in 1999, is 🔑 a mod developed by Minh "Gooseman" Le and Jess Cliffe of the 1998 video game Half-Life, published by Valve.

Currently, the 🔑 games that have been played competitively include Counter-Strike (CS also called CS 1.

6), Counter-Strike: Condition Zero (CS:CZ), Counter-Strike: Source (CS:S) 🔑 and Counter-Strike: Global Offensive (CS:GO).

Major esports championships began in 2001 with the Cyberathlete Professional League Winter Championship, won by Ninjas 🔑 in Pyjamas.