Gene Rally is a car racing game with views for one or up to six players, where you are driving against the clock in practise mode, or against other people in other cars controlled by the computer (you create them yourself and give them their characteristics) in championship mode. You can build your own circuits or choose among the 12 that come as defaults.
It has interesting viewpoints and good graphics, making it a good choice to pass a few minutes.
On the website there is a very active forum with many game improvements, advice, patches...All very recommended.