Dekoboko Densetsu - Hashiru Wagamanma

This cute overhead racing game allows you to play with up to 5 players all at once (using the multi-tap). The object is to race up the varied, auto-scrolling courses, avoiding all manner of weird objects like dung beetles, naked bathing girlies, giant robots, Rambo clones...you get the idea. At the end of each race points are awarded for your finishing position and these can be spent on upgrading your car with a choice of weapons to use against your opponents.