Strata Source
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Strata Source, formerly known as the "Chaos Engine", is a third-party Source engine branch using licenced code. It is a modified version of the CS:GO engine branch that combines the features of both CS:GO and the Portal 2 engine branch, along with many improvements that bring Source close to modern standards. This engine branch is still in active development.
Features
Feature list from the Strata Source Wiki
New since the 
CS:GO engine branch:
- Native DirectX 11 renderer
- Support for DX11 by default
- DXVK support on Linux for both DirectX 9 and 11
- 64-bit support
- Supports 64-bit on all platforms; 32-bit support has been dropped
- PBR shading
- Uses shaders to attempt to more accurately simulate real-world light
- Ported
Portal 2 engine branch features - Including but not limited to World Portals and Portal gun
- Backwards compatibility with BSP v19-20, as well as native BSP v21 support
- Backwards compatibiltiy with
Source 2013 branch models - The model format found in games such as
is now supported. - WEBM video support, replacing older Bink videos
- Increased framerate, lower file sizes, and easier to author
- Many improvements to Linux support
- Fully cross platform engine tools and utils
- Steam Audio
- Many improvements to the
Hammer level editor - Many code quality improvements (Refactors, cleanup and C++20)
- Sentry crash report integration
Availability
The following titles run on the Strata Source branch:
Source code for this branch is not available, however authoring tools exist for each game.
