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: 6,696  Serials: 68,496  Visitors: 74,367,447  Members: 5,632  Photos: 44,011  Lat/Lng: 37,563  Masks: 68,496(1,022.94%)  Traits: 572  Nudges: 223,264  Backglasses: 1,865
  Most Serials: Twilight Zone(1,307)  Most Submissions: Dennis Braun(6,104)  Most Points: Dennis Braun(45,438)  Highest Quality: The Knight(17.00)  Most Nudges: pinballservice-nl(28,311)
The Flintstones - IPSND/IPDB No. 888 - July 1994
Backglass Image
Manufacturer: Williams Electronic Games, Inc., a subsidiary of WMS Inc.
Players: 4
MPU: Williams WPC Security (WPC-S)
Production Run: 4,779
Game Type: Solid State Electronic (SS)
Model: 50029
Submissions: 199 serials of 4,779 (4.16%)
Coverage help:

Coverage is a mathematical interpretation of the serial numbers that have been submitted so far. The term 'coverage' relates to the amount of the production run that has been 'covered' in the given submissions.

There are two coverage methods shown, each has a different approach of calculating an guess on the number of games produced by analysing the currently submitted serial numbers.

Linear: Linear coverage simply looks at the highest serial number and subtracts from it the smallest serial number to estimate the number of games produced. For some games, this works fine because the serial numbers were sequential and without gaps (Early Bally, Early Stern, etc). However, this approach starts to fail quickly for games that serial numbers are part of a bigger numbering scheme (Williams pre 1984, Current Stern) or that intentially had gaps/skips in the numbering sequence(Gottlieb post 1960). If you see a linear coverage number that is higher than the known production run, it is probably not the best way to look at the serial range and you should look at the clustered approach below.

Clustered: Clustered coverage assumes that there are gaps/skips in the serial sequence for a game. It groups the serial numbers together based upon how close they are to the next serial number in the sequence. If they fall within a certain threshold then the SerialBot assumes that there are valid serial numbers between the two. If they are far enough apart, then the SerialBot assumes this is a gap. Once all the gaps and groups are determined, it sums up all the linear ranges in each group. This way, if a sample run of games started at 15,000-15,100 and the production games started at 17,000 onwards, it would assume that the serial numbers between 15,100-17,000 were a gap an are not counted. Using this method, as more serial numbers are submitted the gap analysis will get more accurate.

5,036 (105.38%) linear / 4,627(96.82%) in 2 clusters 238 wide.
Cluster Serial Number SerialBot Submitted By Country Game Part

Submit a new Game Trait

The following traits help

Game Traits are properties for an individual game that you would like to see tracked along with the other information gathered for a serial number submission. Some examples of existing traits are... Joust: Black or Blue bottom Arch, Black Knight: Faceted Inserts or Normal Inserts, Twilight Zone: 3rd Magnet Installed or not.

have been submitted for this game...

Field NameDescriptonSubmitted BySubmit DateSubmitted
There are no traits submitted for this game

Cluster Serial Number Country

This section lists any known game part serials that happen to match this game's serial mask (if defined). What this can tell you is if a game has any orphaned parts that might exist in other machines. This generally applies to CPU/MPU boards, Driver Boards, Display boards etc that are easily moved from game to game. Repair shops and distributors often robbed parts from other 'scrap' games laying around in a pinch if they were not able to fix the original part or of the original part was damaged beyond repair. If serials start showing up in the database as 'game parts', there is potentially a good chance that that game has been parted out completely, which is unfortunate. It is becoming more and more common for people to part out games and sell them on ebay simply because the seller can often make more money that way.... Please do not sacrifice complete games for money!!!

SerialBotSerial NumberTypeSubmitted ByCountryDetails
58731 50229100460 Display/Driver Fun House Germany flag Germany
60706 50229100476 Flipper Board Fun House Germany flag Germany
60192 50229102215 MPU/CPU Fun House Germany flag Germany
48937 50229103479 Flipper Board Fun House Korea, Democratic People's Republic of flag Korea, Democratic People's Republic of
54514 50429100585 Display/Driver Fun House Germany flag Germany
31012 50429101829 Other/Unknown Antti Peltonen Finland flag Finland
23577 50429104576 MPU/CPU John Vorwerk United States flag United States
34783 50629104007 Flipper Board Rod McLarge Canada flag Canada
70474 50729104783 Flipper Board Fun House Italy flag Italy
54830 50729104783 Solenoid Driver Antti Peltonen Finland flag Finland
11418 51029101155 MPU/CPU John Duchi United States flag United States
58267 51029101156 Sound Board Dennis Braun United States flag United States
11590 51029101165 MPU/CPU John Duchi United States flag United States
61817 51029101451 Display/Driver Fun House Germany flag Germany
61602 51029101451 Display/Driver Fun House Germany flag Germany
11587 51029102083 Display/Driver John Duchi United States flag United States
61247 51029103515 Coin Door Dennis Braun United States flag United States
49625 51429101542 Display/Driver Fun House Korea, Democratic People's Republic of flag Korea, Democratic People's Republic of
62842 51429101928 Display/Driver Fun House Italy flag Italy
62848 51429102126 Flipper Board Fun House Italy flag Italy
70797 51429103255 Flipper Board Fun House Italy flag Italy
76479 51429103382 Flipper Board Fun House Italy flag Italy
76064 51429103749 Display/Driver Fun House Italy flag Italy
76474 51429104752 Display/Driver Fun House Italy flag Italy
52974 51429104846 MPU/CPU Fun House Netherlands flag Netherlands
78900 51729104708 Flipper Board Clive Pedersen New Zealand flag New Zealand
35887 51829102727 Display/Driver Pistol Pete United States flag United States
55933 52029101539 MPU/CPU Dennis Braun United States flag United States
35959 52029101685 Display/Driver Pistol Pete United States flag United States
79096 52029101756 Display/Driver Fun House Italy flag Italy
80820 52029101796 Flipper Board Alexander Visotin Australia flag Australia
54817 52029102098 Flipper Board Fun House France flag France
61590 52029104069 Display/Driver Fun House Italy flag Italy
76439 52029104206 Flipper Board Fun House Italy flag Italy
70497 52029104211 Flipper Board Dennis Braun United States flag United States
76442 52029104559 Display/Driver Fun House Italy flag Italy
29158 52129104420 Flipper Board Antti Peltonen Sweden flag Sweden
42893 52229101343 Display/Driver Rod McLarge United States flag United States
80626 52229101350 Sound Board Fun House Italy flag Italy
70790 52229103364 Solenoid Driver Fun House Italy flag Italy
63698 52529103641 Display/Driver Fun House Germany flag Germany
61789 52529103776 Display/Driver Fun House Austria flag Austria
35600 52529103886 MPU/CPU Rod McLarge United States flag United States
68222 52529104260 Display/Driver Fun House Netherlands flag Netherlands
69219 52529104887 Display/Driver Fun House Italy flag Italy
59430 52829101718 Display/Driver Fun House Netherlands flag Netherlands
29438 53329100193 Flipper Board John Vorwerk United States flag United States
67720 53329100282 Display/Driver Fun House United States flag United States
66706 53329102849 Display/Driver Dennis Braun United States flag United States
34630 53329102997 Solenoid Driver John Vorwerk United States flag United States
34382 53329102997 Display/Driver Rod McLarge United States flag United States
36251 53329103082 Flipper Board Rod McLarge Canada flag Canada
77104 53329103118 Display/Driver Dennis Braun United States flag United States
49029 53329103177 Display/Driver Dennis Braun United States flag United States
11823 53329103312 Other/Unknown Dan Gutchess United States flag United States
68103 53329103399 Solenoid Driver Dennis Braun United States flag United States
59394 53329103982 Display/Driver Dennis Braun United States flag United States

This section lists any known information about how to physically find serial numbers on games created by this manufacturer. For all manufacturer tips, please visit the Serial Tips Page . (Please do not post serial numbers here on this form.)

Posted 1/11/2007 11:54:45 PM by Bill Ung

Newer Williams and Williams/Bally games have cute little stickers everywhere. This began with System 9 games (as far as I know) and include game ID number information, as well as the serial number. There are two styles:

  • The blue/grey and white stickers ran through the Hurricane era. These include the official game ID number (ie: 541 or 50018), separated from the actual serial number by a few spaces. Early games, till about the end of 1986, had five-digit serial numbers. Since then, serial number have always been six digits.
  • The white stickers include encoded game ID numbers. Well, the ID numbers aren't identical to the one you'll find in the ROM, but it DOES match the game ID number listed on the back of the machine. The number may change based on country. This is an item still being debated somewhat.

Overall, you'll find these stickers on the fronts of the cabinets, on top of the head, on the back of the cabinet (along with an encoded manufacturing date), insi

Posted 4/28/2008 2:40:04 PM by Jim West
Pinball2000 machines have two parts each with their own serial number. The base serial number is for the playfield cabinet. This serial number is for the top unit of the pinball.
Posted 12/20/2008 10:07:35 PM by MARK SPENCER
OPEN COIN DOOR, LOOK TO RIGHT , MFG STICKER SHOULD BE ON SIDE.
Posted 2/23/2009 9:24:15 PM by Richard Harvey
Game Date Stamp for BK2K under backbox with head down.
Members can submit new tips on how to find serial numbers! Sign up for a free membership here!

This game has the following serial number formats defined in the database. As serial numbers are sumbitted, trends are recognized and defined or information about a serial number format is collected through historical information.

TypeExamplesRegExMaskLowerLimitUpperLimitAutoAssignable
Production Game 51429101840, 51429103289, 51429104681 ^(5[0-9][0-9]29)(?<sortdata>[0-9][0-9][0-9][0-9][0-9][0-9])$ True
International Game 53329I104924, 53329I104910, 53329I104854 ^(5[0-9][0-9]29)(I)(?<sortdata>[0-9][0-9][0-9][0-9][0-9][0-9])$ True
Experimental Game 53329X104924, 53329X104854, 53329X103674 ^(5[0-9][0-9]29)(X)(?<sortdata>[0-9][0-9][0-9][0-9][0-9][0-9])$ True


The Serial Bot Summary information here gives a detailed explanation of the Serial Bot analysis for this specific game. The theory behind the Serial Bot is this...

Every game has many many serial number submissions, the goal of the IPSND is not to guarantee that *all* information is 100% correct but that over time, the system should automatically devalue inaccurate submissions while increasing the value of correct submissions.

You may click on the SerialBot score of any submission to see how it was calculated.

SerialBot Color Codes:
- Not Validated The serial number submission has not yet been validated by the submitter via email.
- Unknown There is no known information on the serial number format for this game yet. As more submissions are received we can start to make a best guess on the serial number format.
- Good If a serial does not fail any of the tests for a status of Warning or Bad, then it is good.
- Suspect A serial will have a suspect status if the format is technically correct but there is something wrong with the data. Examples might be that the number might be too high or low for the known range of serials for this game.
- Bad If a game has a serial number definition mask defined for it, then a serial may be marked as 'bad' if the number does not validate agains the mask. Masks are created for games by looking at known serial number formats and consist of a regular expression to define the format of a game serial.

SerialBot Scores:
1 Point Awarded if the serial number has a game assigned to it. This autoatically makes submissions with a known game more valuable than submissions without a known game.
1 Point Awarded if the serial number has been 'verified' by the submitter. A submission is 'verifed' if the submitter clicks on the link in the email sent to them for each submission. The basis for this rule is that submissions by people that do not take the time to respond to the email might be entering garbage data and/or giving fake email addresses. However, it is common for 'verification' emails to get stuck in spam filters etc, so, members may have 'verification' emails re-sent at any time.
1 Point Awarded if the submitted serial number matches one of the predefined serial number masks for this game.
1 Point Awarded if the serial number was marked as 'Physically Viewed' during the submission process. This is an interesting distinction as there are many times that serial numbers are submitted off owners lists, Ebay auction, etc. While these serial numbers are valuable, they may also be innacurate. In comparison, Physically Viewed serial number submissions are numbers that the submitter has actually been in front of the machine reading the number and then submitting it. Since it is more likely to get a good visual from a physically viewed machine, this gains an extra point.
1 Point If a photo is uploaded with the serial number submission. The submission automatically gains an additional point. Be aware however that this opens the submission up to 'Nudges' by members where even more points can be added or subtracted based upon the quality and accuracy of the photo.
-3 to +3 Points Members can 'Nudge' every sumitted photo once and give it an extra boost of 1 point or take away 1 point depending if the photo matches the submitted serial number. While any number of members may nudge a serial, the nudging can only affect the score by +/- 3 points in either direction.

The following map shows the locations of all serial numbers that were submitted with a geolocation...