See the long-lost NES prototype of SimCity
Gamers of a certain age probably remember that Nintendo worked with Maxis to port a version of the seminal SimCity to the brand new SNES in 1991. What most gamers probably don't realize is that an NES version of the game was developed at the same time and cancelled just before its planned release.
That version of the game was considered lost for decades until two prototype cartridges surfaced in the collecting community last year. One of those prototypes has now been obtained and preserved by the Video Game History Foundation's (VGHF's) Frank Cifaldi, who demonstrated the emulated ROM publicly for the first time at MAGFest last weekend.