Motocross Go! © 1997 Namco, Limited.
Motocross Go was released on October 30, 1997 in Japan.
Race Alone: Hold brake, gas, and view while you insert your coins. Keep thm pressed until you start the race.
Secret Bikes: When selecting bikes, while turning the handle to full throttle and holding the brake, select your bike with the view button. The YZ400 gives you a transparent player with a visible heart. The YZ250 gives you a player in a black jumpsuit (very fast!!)
Game's manual.
Game's ROMs.
Official website; http://www.bandainamcogames.co.jp/am/vg/motocrossgo/