SimCity big box
A terrain editor and architecture disks were available with tileset graphics for settings of Ancient Asia, Medieval, Wild West, Future Europe, Future USA and a Moon Colony.
The July 2005 issue of Nintendo Power stated that a development cartridge of SimCity for the NES was found at Nintendo headquarters. Never released, it is reportedly the only one in existence.
Edition: for Commodore 64
Series: Part of the SimCity series.
Download: get SimCity
Search on eBay: search SimCity on eBay