TRIVIA

  • The keyword “Nexon” in chat has always been censored in all Counter-Strike Online versions, with the exception of Counter-Strike Nexon: Zombies.
  • Counter-Strike Online was originally released for the Asian market.
  • After the closure of Counter-Strike Online 2, its successor, several of its characters and weapons were ported to Counter-Strike Online.
  • The “Online” in the title was intended to avoid confusion as another official Counter-Strike game made by VALVE.
  • During a CSO World Championship 2013 event in China, one of the models was seen holding a replica of the Black Dragon Cannon (in-game weapon).
  • One of the zombie models has a hidden banner displaying “[2007] NEXON & Valve Corporation. All Rights Reserved”. While the game was officially released in 2008, the beta-testing period commenced in 2007.
  • CSO originally locked access to all weapons except for the knife, USP and Glock 20 pistols, M3 shotgun, MP5 submachine gun, SCAR-L, XM8 and FAMAS assault rifles and the Scout sniper rifle. The rest were unlockable with either cash or in-game points, and were bound to time-restrictions (30 days, 60 days and 90 days).
  • The World Cyber Games 2012 once featured CSO in its game roster to substitute Counter-Strike 1.6. Due to the massive backlash from viewers, it did not make any future appearance ever since.
  • Contrary to popular belief, CSO reuses the same engine from Counter-Strike: Condition Zero.
  • Functional doors in certain maps (e.g. Assault) in Zombie PVP modes can be destroyed.
  • To date, CSO remains the most active Counter-Strike spin-off title.
  • VALVE licenses the Counter-Strike property to Nexon Corporation and subsequent publishers. Therefore, VALVE’s logo appears in every official teaser and trailer.
  • CSO runs on a Steam back-end. By bringing up the developer console, the Steam logo is seen at the top-left corner.
  • Nexon previously invited a few famous South Korea celebrities to comprise different roles in CSO. An example is Ye Zi (Ye Ji), a rapper from a five-girl group Fiestar.
  • The M134 minigun is the heaviest weapon in-game.
  • CSO Singapore/ Malaysia was the only version to suffer from a major database attack through an SQL injection exploit before its closure.
  • The Studio game mode has been a long-awaited feature as players wanted to create their own maps. It was in development since early 2016 and finally released in July 2017, making it the longest game mode to be ever released.
  • The game features a mosque map which has never been released in certain regions due to religious issues.
  • The option to disable blood is not available on CSO China.
  • CSO uses custom mapping based on sky images in South Korea for its skyboxes.