, developed by Valve and Hidden Path Entertainment, was released in 2012 and transitioned to a free-to-play model in December 2018. Despite the official game being free, "No-Steam" versions remained popular in 2021 for several reasons:

While the base game is free, distributing modified versions of Valve’s proprietary software violates their .

: Many No-Steam versions are packaged for LAN play or offline use in regions with unstable internet.

: Some versions are optimized for older hardware that struggles with the modern Steam overlay.

In 2021, while "No-Steam" downloads offered a way to bypass platform requirements or access paid cosmetics for free, they introduced substantial security vulnerabilities and a degraded gameplay experience. Given that the official version of CS:GO (now ) is free and secure on Steam, the official platform remains the recommended method for access.

: These clients do not receive official security patches or gameplay updates from Valve, leading to bugs and incompatibility with official servers.

: Redistributing game assets without a license is a breach of intellectual property laws.

Downloading "No-Steam" versions from unofficial 2021 sources carries significant risks: