Counter-Strike Online
Counter-Strike Online (CSO) is a MMO free-to-play spinoff of Counter-Strike: Condition Zero with new weapons, skins, microtransactions and custom gamemodes which is developed by Nexon Corporation, with oversight from license-holder Valve Corporation. Unlike other Valve games, this version of Counter-Strike will not require Steam to play. It's also restricted most of the feature on the GoldSrc engine, such as the Developer console being limited to certain commands, and the game files are completely packed differently than other Valve games, in a more proprietary formats to prevent the game contents being leaked. The game also doesn't use VAC, instead using various anti-cheat middleware such as BlackCipher (developed in-house by Nexon Korea).
Counter-Strike Online is targeted at the Asian games markets and is now available for play on Steam in other countries as 
Counter-Strike Nexon.
Server Status
Last updated: December 28, 2025
| Country | Publisher(s) | Server Status | Website/Download |
|---|---|---|---|
 Worldwide ( CS Nexon)
|
Nexon Europe | Active (as of Dec 2025) | Website Steam Store |
| South Korea
|
Nexon | Active (as of Dec 2025) | Website |
 Taiwan
|
beanfun! | Active (as of Dec 2025) | Website |
| China
|
beanfun! | Active (as of Dec 2025) | Website |
 Japan
|
Nexon | Inactive Servers officially closed on 6 March 2019. |
Website |
 Indonesia
|
Megaxus | Inactive Servers officially closed on 1 August 2019, annexed with Counter-Strike Nexon |
Website (Archived) |
 Singapore/Malaysia
|
IAHGames | Inactive Servers officially closed on 30 June 2015, annexed with Counter-Strike Online Indonesia, then later Counter-Strike Nexon. |
Website (Archived) |
 Thailand
|
PlayFPS | Inactive Servers officially closed on 19 December 2013, annexed with Counter-Strike Nexon. |
Website (Archived) |
 Turkey
|
Nexon Europe | Inactive Servers officially closed on 30 December 2014, annexed with Counter-Strike Nexon. |
Website (Archived) |
| Vietnam
|
GoPlay | Inactive Servers officially closed on 15 August 2016, annexed with Counter-Strike Nexon. |
Website (Archived) |
Media
Counter-Strike Online Wallpaper
External links
See also
- Counter-Strike Nexon - Worldwide (mainly Western countries) version of the game (available on Steam).
Counter-Strike Online 2 - A sequel.
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