Sacred Haven of Debauchery

Isn't 2004 better than the subsequent ones?

There was only one subsequent game, the third one. If you played 2004 and 3, you should remember that yes, it is. In the third game, essentially, there's only a plastic-looking UT3-engine graphics, skateboards, and alien technology. That is, it's cool, of course, but there are fewer maps, fewer modes, no bunny hopping, and so on.