fps is easily the easiest. not a good fps of course my first project was an fps with a shotgun, an automatic rifle, and a special stone that slows down time. i had baddies that would run directly towards you if they could see you, and if they hear a gunshot they turn around to see where it came from. lots of fun to make, but playing it quickly got old

racing can be quite hard if you don't know your physics. and i don't mean programming your own physics engine either, you can't really use a physics engine properly without a little knowledge of how things in real life interact, forces, etc.

julz