box2d.org/
A 2D Physics Engine for Games
Games you can play with two or more people on one computer or device.
Suggest updated description
http://ludumdare.com/compo/2015/04/15/welcome-to-ludum-dare-32/
Explore games made with Box2D tagged Local multiplayer and Ludum Dare 32 on itch.io · Upload your games made with Box2D to itch.io to have them show up here.
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