Honestly Though, my favorite game I've played would have to be the whole Jedi Outcast series, they were good quality games, at least for there time. Plus they also have a pretty big modding community as well.
It was mostly an FPS, but the gameplay was really fun.
P.S. Desert Bus was a joke.... it's this gag game that they call a verisimulator, or a game that's stupifyingly like reality, basically, you are a bus driver that's driving from tuscony to arizona, you pick up a few passengers in the game, but all your doing is just that driving to arizona,, driving through endless desert. It take you four hours to get there, and when you finally reach there, you get 1 point, then you can decide to either end the game or go back again.