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: 6,406  Serials: 55,335  Visitors: 40,975,053  Members: 4,244  Photos: 31,797  Lat/Lng: 27,266  Masks: 55,335(863.80 %)  Traits: 544  Nudges: 161,542  Backglasses: 1,865
  Most Serials: Twilight Zone(1,134)  Most Submissions: Dennis Braun(4,705)  Most Points: Dennis Braun(34,966)  Highest Quality: EM-fan(9.52)  Most Nudges: King of Pinball(21,286)
Williams System 11A
IPDB:  View at IPDB (External site)
Stats:  MPU used in 6 games.
   
BackglassGameYearManufacturerSerials
Backglass Image PIN·BOT1986Williams Electronic Games, Inc., a subsidiary of WMS Inc.491
Backglass Image PIN·BOT1987Universal de Desarrollos Electronicos, S.A.1
Backglass Image Millionaire1987Williams Electronic Games, Inc., a subsidiary of WMS Inc.91
Backglass Image F-14 Tomcat1987Williams Electronic Games, Inc., a subsidiary of WMS Inc.482
Backglass Image Fire!1987Williams Electronic Games, Inc., a subsidiary of WMS Inc.137
Backglass Image Fire! (Champagne Edition)1987Williams Electronic Games, Inc., a subsidiary of WMS Inc.32