Beta LAN Multiplayer (ccoss open source b33) - Steam Community
: The official Data Realms GitHub repository (CCOSS) contains the source code for what is internally called "B33".
If you are looking for a "free" version of the game today, the is the recommended path. It is a completely free, standalone, and modernized continuation of the Build 33 source code. Cortex Command Free Download (Build 33)
: This version includes a non-traditional local network multiplayer mode.
: In 2019, developer Data Realms released the game's source code under the GNU AGPL v3 license. This effectively made the core engine free to study and modify. Beta LAN Multiplayer (ccoss open source b33) -
: Featured a reworked loading screen and fixes for invincible crafts and siege unit spawning bugs.
Build 33 introduced several experimental features that were never fully finalized in the original commercial Steam release: : This version includes a non-traditional local network
The legacy of Cortex Command represents a pivotal moment in the game's history, as it was the specific "work-in-progress snapshot" used for the game's transition to open source in July 2019. While it is no longer the current version, it remains available through specific community and archive channels. Availability and Legality