Physics included?

#1 There are different physics for different classes in the game... simple gravity, velocity, friction, etc. for players, and basic rigid body dynamics for vehicle classes, which also has a stand alone class that can be used for simple rigid body objects. There's no unified physics arcitecture for all the objects in the game or anything. Third party physics engines are constantly being integrated into the engine with varying degrees of success by people in the community. For example Tube Twist and maybe Rocket Bowl had ODE integrations for more advanced physics, which worked fine as they were single player games... advanced physics for multiplayer networked gameplay gets tricky though, but all of TGE's existing physics do work with it.