Rigs of Rods is an open source simulator for soft-body physics
What makes Rigs of Rods different to most simulators is its unique soft-body physics simulation: Objects are simulated in real-time as flexible soft-body objects, resulting in a very realistic simulation which entirely depends on the physical construction of the object. The community contributes greatly to the game, giving it a vast selection of vehicles and terrains from which you can choose.
Rigs of Rods is mostly used for simulating vehicles but it is flexible enough to be suited for other tasks as well.
Soft-body physics based on mass-spring-damper model
Advanced flight model based on blade element theory allowing accurate simulation of any airplane, based entirely on its physical dimensions and wing airfoils, similar to X-Plane
Accurate buoyancy model based on elemental pressure gradients, allowing boats with complex hulls to move realistically through waves
Supports scripting using AngelScript
Support for Wheels, gamepads and joysticks including Force Feedback
Advanced graphical effects thanks to OGRE3D engine
3D positional audio and HRTF support thanks to OpenAL Soft