One version is common, at least one other version is rare
 Game design by Brodie Lockard. Coding & sound by Gene Smith. Graphics by Gene Smith and Glyn Anderson; titlescreen by David McMacken of Transphere International advertising agency.  Game supports a quit back to WB option.  Original game contents included a Shanghai postcard, and provided details of how to obtain a game demo for $3 p&h from Activision.