Farseer Physics Engine for XNA and Silverlight (And .NET in General)

The Farseer Physics Engine is an easy to use 2D physics engine designed for Microsoft’s XNA and Silverlight platforms. The Farseer Physics Engine focuses on simplicity, useful features, and enabling the creation of fun, dynamic games.


  • General
    • Easy To Use!
    • Support for XNA (XBOX 360 and Windows)
    • Support for Silverlight (1.1 and above)
    • Support for Managed .Net Languages In General
  • Collison
    • Concave and Convex Polygons Supported
    • Multiple Collision Geometries Per Body
    • Collision Categories For Complex Interaction Between Physics Objects
    • Collision Callback Mechanism
  • Dynamics
    • Joints
      • Revolute Joint (body to body or fixed to world)
      • Angle Joint (body to body or fixed to world)
      • Slider (Prismatic) Joint
      • Pin (Distance) Joint
    • Force Controllers
      • Linear Spring
      • Angular Spring
      • Easy To Build Custom Force Controllers (Explosions, Steering Behaviors, etc.)
  • Support and Debugging
    • Samples Framework With Samples Covering Most Major Engine Features. (XNA and Silverlight versions)
    • Debug Viewer To View All Major Physics Objects (part of samples framework)
    • User Manual (in progress)

Interview from InfoQ

Although intended for games, a physics engine can be used for UI effects too. This would generally be very useful to create cool effects, especially on Silverlight applications.