Rubikon

Assess

Tools

A custom physics engine associated with Valve and referenced as the codebase adapted into Box3D.

Why it's here

Placed in Assess: 1 article(s) of evidence from 1 source(s), led by open-source activity, with 0 in the last 30 days. Confidence 24%. Low accumulated evidence, so it defaults conservatively pending more signal.

Evidence (1)

6Hacker News·7/1/2026open_source
Box3D: open source 3D physics engine released
Box3D is a new open source 3D physics engine announced on GitHub, built as a 3D extension of Box2D. It adds features such as triangle mesh collision, height-field collision, continuous collision, SIMD contact solving, multi-threading hooks, and deterministic recording/replay for games.