Open pandora box and see what we got inside... Counter-Strike Online is a 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 Co. Ltd. with oversight from license-holder Valve Corporation. It uses a micropayment model that is managed by a custom version of Steam. Initial release date: 2008 Engine: GoldSrc Genre: First-person shooter Developers: Nexon, Valve Corporation Platform: Microsoft Windows Publishers: Nexon, Valve Corporation, Gamania