Counter-Strike Online is a Counter-Strike game targeted towards Asia’s gaming market. It is developed by Nexon Corporation of South Korea with oversight from license-holder Valve Corporation. It uses a micropayment model that is managed by a custom version of the Steam back-end.

Counter-Strike Online features some old game modes from the previous Counter-Strikes and new ones: Normal, Death Match, Team Death Match, Zombie Mode 2, Zombie United Mode, Zombie Mode 3, Challenge Mode, Zombie Survival Mode and VIP Mode.

The game also features a variety of additions over the International Counter-Strike, such as an introduction to female characters, numerous new weapons and skins for previous weapons. Most of the weapons are “locked” by default, so GASH virtual cash or in-game points are essential to purchase them. GASH points are purchased through real-world money for special weapons, skins, power-ups, etc.