The first convention that desert bus follows is that it has levels/ mission being that you have to drive the bus from point A to point B, if you were to try and complete this, it would roughly take 8 hours to do it and then it would take another 8 hours to drive back again.
The game is very realistic as when I am playing it, I have to keep my concentration on the screen mnaking sure that the bus does not swerve off the road. The game is usually part of a charity event and it may not appeal to lots of people as their is no great reward or sense of achievement while playing this game.
Other computer game conventions are:
