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: 6,555  Serials: 61,702  Visitors: 59,521,767  Members: 5,039  Photos: 37,530  Lat/Lng: 31,777  Masks: 61,702(941.30%)  Traits: 557  Nudges: 190,634  Backglasses: 1,865
  Most Serials: Twilight Zone(1,213)  Most Submissions: Dennis Braun(5,706)  Most Points: Dennis Braun(42,428)  Highest Quality: EM-fan(9.45)  Most Nudges: King of Pinball(24,998)
Williams System 9
IPDB:  View at IPDB (External site)
Stats:  MPU used in 3 games.
Backglass Image Space Shuttle1984Williams Electronics, Inc. (1967-1985) 270
Backglass Image Sorcerer1985Williams Electronics, Inc. (1967-1985) 156
Backglass Image Comet1985Williams Electronic Games, Inc., a subsidiary of WMS Inc.246