Thanks to people like Paige Oliver, and
@Brentradio, we know that approximately 4,830 units of this game were produced. I thought it might be nice to see if we could compile how many are still around today. VAPS does not appear to capture serial #.
LL62: ComputerSpace (as of 2021)
LL142: sg6970
LL509: mnrocketry (former) - purchased it out of an operator's warehouse in Minnesota
LL-665: Iggy (in MD)
LL-1973: coinopper (in PA)
LL2486: 64B1T
LL2650: VectorCollector - "Canadian" LL
LL3524: mnrocketry (purchased it on eBay out of KC, MO in 2006)
LL4369: vintagegamer (acquired from PA Sep 2025)
LL4437: Rabidcat
LL4590: arcadetechgw - picked it up off eBay a few years ago. It was previously (by the nice wooden crate it was in) from John's Jukes.
Please feel free to reply to this thread and a mod or myself can update the list.
Brent's site:
Additional note: there is a LL in the movie The Philadelphia Experiment