From the back of the case to the North American Sega Master System edition "Steady your nerves and concentration. You're about to play Shanghai! Shanghai is based on an ancient game that's over 25 centuries old. Over the years since, it has been a favorite of pirates and smugglers, flappers and gangsters, of working men and the well-to-do. Now you can play it too, on the Sega System. The game is simple... the strategy complex. Remove 144 tiles from a pyramid; two matching tiles at a time. But be careful. Remove the wrong two tiles and you're left with no more matching pairs... game over! It's a game everyone can play and enjoy."