セクスプレス

The protagonist of the game is a young Japanese man who is lucky enough to win a ride on the S-Express, a miraculous train connecting Australia with Canada and going through almost the entire world with stops in Singapore, Japan, China, India, Israel, Russia, France, Ivory Coast, Brazil, Panama, and USA. Nearly the whole game is set on the train itself, with only a few locations accessible within.

[From Mobygames]