Hi
Is it possible to make racing games using 3dGamestudio?
if is it possible , is it difficult? is there any sites that provide enough information and tutorial for that type of game?
thanks!

It should be fairly easy. You just need some tracks, things that are in the races (whether cars, humans, or some imaginary character), set up the racing system code (about 300 lines for the core components for the very base fundamentals, more for additional players). For other features like upgrades, track selection, etc., that'll take a little more effort and time to do. I suggest starting with a single, simple track and get the basic core components down. Then, when ready, make a bigger track to about how your game will have it.

Aum 32 - 35 will help you out on this topic George is a great programmer and has helped people like you along this topic, depending on the detail you want and compared to things like RPG's yes it is easy to make a racing game on 3DGS here is the link for the AUM's look and see for yourself if you think it is easy or hard. Check out all of the Aum's here, you only want AUM's 32 through 35 for specifically racing games this is not all you can do but you can see some of the work that was needed to start this, he shows a number of methods of doing this if I remember right.