Unity 4.3 has just been released - it includes a brand new 2D physics system. The new physics system is based on Box2D and is great, but there a few missing features with Unity's implementation. Well, we've decided to fix that. Physics 2D Extensions is a set of add-on components to Unity's 2D physics system that add additional functionality. Features included: Fully compatible with Unity's 2D physics system, building on top of native 2D physics Wheel joints, rope joints, and weld joints Joint break events Buoyancy simulation Wind simulation Planetary gravity simulation Works on all editions of Unity (Free and Pro), on all platforms that support 2D physics. High performance - the code has been optimized for Unity's specific 2D physics implementation. No needless run-time allocation is performed. A familiar API - uses the same exact component structure, with all components properly exposed through both the inspector and scripting. Includes a full example scene with every component Coming soon: Pulley joints Explosion forces Breakable bodies Cloth simulation (One or two-dimensional) Softbodies And more! We have a bunch of stuff in the pipeline that we'll announce later. We'll also be updating this package whenever Unity updates their 2D physics, to enhance any new features they come up with. And as always, we're just a click away - Physics 2D Extensions will come with Thinksquirrel's full product support. Purchase Physics 2D Extensions - $25 Media Web Player Requires Unity 4.3 or above.