Box2D is an open source C++ engine for simulating rigid bodies in 2D. Box2D is developed by Erin Catto and has the zlib license. While the zlib license does not require acknowledgement, we encourage you to give credit to Box2D in your product.

Box2D Features


  • Continuous collision detection
  • Contact callbacks: begin, end, pre-solve, post-solve
  • Convex polyons and circles.
  • Multiple shapes per body
  • One-shot contact manifolds
  • Dynamic tree broadphase
  • Efficient pair management
  • Fast broadphase AABB queries
  • Collision groups and categories


  • Continuous physics with time of impact solver
  • Persistent body-joint-contact graph
  • Island solution and sleep management
  • Contact, friction, and restitution
  • Stable stacking with a linear-time solver
  • Revolute, prismatic, distance, pulley, gear, mouse joint, and other joint types
  • Joint limits, motors, and friction
  • Momentum decoupled position correction
  • Fairly accurate reaction forces/impulses
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Blog RSS Feed Report abuse Latest News: Crazy Belts out now!

About Crazy Belts with 0 comments by jemchicomac on Jun 20th, 2014

We're proud to announce that Crazy Belts is out for Android and iOS now, after months of hard work. We really wish you to enjoy the results, and of course we're willing to have your feedback and ideas.

Crazy Belts is a puzzle game for all ages, in which we become the cargo guy of an airport in charge of the conveyor belts. Control the moving parts of the cargo facility and handle the bags to their right destination. Keep special care on VIP bags, bio-hazardous luggage contents and other pieces moved across the globe.

Play across +50 levels in +5 countries with increasingly complex cargo facilities full of crazy conveyor belts and moving parts. Help Loui the Bag and his friends to come back home!

3volution - A Primordial Soup Challenge

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★★★ WELCOME TO THE MYSTERIOUS WAYS OF 3VOLUTION - A PRIMORDIAL SOUP CHALLENGE! ★★★ So, you think life just accidentally began when organic molecules (after...


Asunder Asunder Indie

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Take the role of multiple characters as they experience a mysterious calamity that not only threatens to destroy everything, but their perception of reality...

Balancing Fury

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Updated 7 months ago Released Oct 2, 2013 Single Player Arcade

Balance your phone and touch sides of the screen to put balls into matching "gates". Play 15 different levels, try your skills in "Fury mode" or create...

Beat Beat Shooter

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Updated 11 months ago TBD Single Player Arcade

Beat Beat Shooter is a 2D sidescrolling rhythm shooter. Yes rhythm! the game combines the classic controls and objectives of a regular 2D shooter where...

Blind Escape

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Blind Escape is a casual platformer for Windows and Mac. Escape your own subconscious which has trapped you within your own deep dark mind and use foresight...

Post comment Comments
PhBR Nov 9 2012, 12:19pm says:

No Download?

+2 votes     reply to comment
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Release Date
Released Sep 11, 2007
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