I'm going to give it a try soon after it's done downloading, but why is the download 342MB?
EDIT: The base game idea is good, but you should fix a few things before you can get alot of people downloading this.
- I noticed that all of 3D Rad's default objects are included, but most of them aren't used as far I can see. Try loading the project files into the editor and exiting that file without changing anything, to generate the compiler's optimization files.
- I got stuck inside a wall on the first track and had to reset the race. For some reason I had to press Enter twice to reset it, since the first time makes the kart appear below the track.
- The menu works well, but I think you should have most, if not all of it running in a single project file. Also, using textprints makes the game load slower on low end PC's. Try using sprites for text where possible.
- Try using the Car object for the AI, it seems to make them drive better and straighter than when you use the PCar.
I did like the obstacles on the tracks like the boxes and the falling balls, it gives a little bit of challenge and some fun. The karts themselves look quite nice as well