Common
Counter-Strike Online
2008 video game
Counter-Strike Online
Counter-Strike Online (CSO) is a tactical first-person shooter video game, targeted towards Asia's gaming market released in 2008. It is based on Counter-Strike and was developed by Nexon with oversight from license-holder Valve. It uses a micropayment model that is managed by a custom version of Steam.
Open boosters, collect cards and trade them. Free to play.
Play for free