Space City
OPDBZaccaria1978–1979
2 editions of one title, held as separate machines because their playfields differ.
Future World
1978 · 2 ROMs
Base
1979 · 1 ROM
What differs, by the numbers
0 of the compared properties differ. Counted from each edition's own definition, so this holds whether or not anyone has written the differences down.
| Property | Future World | Base |
|---|
Counts come from each edition's own definition. A zero means the definition records none — for a stub or partial edition that may mean nobody has described it yet rather than that the machine lacks it.