erincatto/box2d-lite

Health v2 · maintenance only

Adoption not part of the score

1074 stars · 138 forks observed · 2026-08-28

What it is AI-extracted, prompt v1, taxonomy v1, 2026-08-30, confidence not recorded

Box2D-Lite is a small 2D rigid body physics engine written in C++, originally developed for the 2006 GDC Physics Tutorial. It is the minimal predecessor of the full Box2D library and is intended primarily for learning how game physics engines work.

Use cases

• learn how 2D physics engines work internally
• simulate rigid bodies and collisions in a 2D game
• study sequential impulse solver techniques from the GDC tutorial
• prototype simple 2D physics interactions
• use as a teaching example for game physics courses

When to choose

• you want a tiny, readable codebase to study physics engine internals
• you need basic 2D rigid body simulation with minimal dependencies
• you are teaching or learning game physics concepts

When to avoid

• you need a production-grade physics engine with full features (use Box2D)
• you need 3D physics simulation
• you need active maintenance, documentation, or community support

Facets

library · maturity maintenance

simulation graphics simulation education cpp cross-platform 2d-physics rigid-body collision-detection physics-engine learning-resource game-development

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markdown · JSON · MCP: product_card(name="erincatto/box2d-lite")