: Unlike the standard Steam release, these builds often contain Program Database (PDB) files. These allow modders and data miners to decompile parts of the game more effectively to understand its inner workings.
The data found in builds like 24022022-OFME often fuels community projects. For example, is a community-maintained version that rebuilds the engine on a modified CS:GO framework, adding features like a native DirectX 11 renderer and volumetric lighting. Portal 2 Build 24022022-OFME.rar
: Such archives often include "sdktools" or repository-specific folders containing development test maps. These maps, such as devtest , were used by Valve to test new features like gels, tractor beams, and excursion funnels. : Unlike the standard Steam release, these builds
: In June 2022, a massive trove of developer maps for both Portal 1 and Portal 2 was found in the files of the Nintendo Switch release. These maps were previously absent from the PC version. For example, is a community-maintained version that rebuilds
The emergence of this build is part of a larger trend in the Portal community involving the discovery of development data: