   using game engine......
  HI!I want to make a car race in a very short duration of 3 months.It should be a 3d car game.I think i don''t have so much time to make any engine for my car game.Which will be a preferable engine to make a game of this type.what do u say about quake 2 engine.I am also trying to use power render engine.Plzz give me a good response.regardsMizraab  
  I have done some work with the Genesis3D, and I find it not extremely hard to use. It contains a lot of example code and a complete game (first person shooter.) Unfortunately, it is not very new and does not contain the latest technologies (IIRC from the last time I used it.) The most popular 3D game engine that is open source right now is called Crystal Space 3D. I have not done any engines-specific work with it, but a lot of code review and reference. I also use the build system that comes with it, very nice.Look into one of those two.;  Another popular (and free) graphics engine is OGRE;  I''m not sure what your budget is, but the demos of 3D Rad and the Torque Game Engine SDK include car racing examples. ;  The Fly3D engine used in the book "3D Games: Real-time Rendering and Software Technology, Volume 1" is a simple but suprisingly good engine. I remember that in the first version of the engine there was a little cellshaded carracing-game. The adress for the engine is: http://www.fly3d.com.br/, though it was down last time I tried to access it. ;  You can check out Blender, the old 2.25 version has a game engine.http://www.blender.org 