Duel Racer 3
This two player top down split screen race game with lots of cars and tracks, makes for a lot of fun if you have a sibling or friend around. Not entirely realistic, but great fun. Challenge your friends for a little race and see who's best. The many cars give a lot of variation, including hilariously slow races in pick-ups or the opposite: driving Lamborghinis around tiny kart tracks.
I made this game together with my brother Mark. In fact, the original idea is his.
Download Duel Racer 3 off YoYoGames.