This game is the version of Gottlieb's 1978 'Neptune' made for export to Italy. The replay version of this game is Gottlieb's 1978 'Hit the Deck'.
Gottlieb Domestic & Export Sales Sheets for Poseidon: 531 total
Domestic Sales: 0
Export Sales: 531, all of them went to Italy.
The above total does not include 3 Sample games produced in 1977 per handwritten documentation identified by Wayne Neyens as coming from Bob Malvasio, a draftsman for Gottlieb whose initials RHM can be found on schematics.
