The Internet Pinball Serial Number Database or IPSND collects serial numbers of pinball machines and publishes a database of these on the Internet. Our goal is to make available a registration of all pinball machines in existence and allow tools for slicing, dicing and visualization of the data.

Games: 6,371  Serials: 53,920  Visitors: 37,435,229  Members: 4,115  Photos: 30,467  Lat/Lng: 26,552  Masks: 53,920(846.33 %)  Traits: 519  Nudges: 154,840  Backglasses: 1,863
  Most Serials: Twilight Zone(1,111)  Most Submissions: Dennis Braun(4,441)  Most Points: Dennis Braun(33,013)  Highest Quality: EM-fan(9.25)  Most Nudges: King of Pinball(20,627)
Williams System 6A
IPDB:  View at IPDB (External site)
Stats:  MPU used in 2 games.
Backglass Image Algar1980Williams Electronics, Inc. (1967-1985) 14
Backglass Image Alien Poker1980Williams Electronics, Inc. (1967-1985) 75