Louis Koziarz @koziarz.com · 25/09/2026PLD Roller Coaster Tycoon Pinball: The whitewood is flipping and we're coding. Just not a lot of rules yet. 170
Louis Koziarz @koziarz.com · 24/09/2026PLD RCT pinball, whitewood time. #2 went together pretty quickly but with the usual Lawlor complement of holes in the playfield that went nowhere. There's packing tape all over the place to keep balls at ground leve. 090
Louis Koziarz @koziarz.com · 23/09/2026PLD RCT pinball: The new workshop also gave Krutsch a lot more room to hand model ramps and wireforms. 091
Louis Koziarz @koziarz.com · 17/09/2026Pat also got a deal on some old lathes and whatnot and one day a truck shows up and we forklift it in. 050
Louis Koziarz @koziarz.com · 17/09/2026PLD RCT Pinball: our new offices had a lot more open room for workshop space. The wood router stayed in his garage but all the other metalworking tools came over. 2111
Louis Koziarz @koziarz.com · 16/09/2026PLD RCT early days: After moving offices to Harvard we whipped up a quick first whitewood to show shots. Then we started getting the next playfield up after the holidays. 0120
Louis Koziarz @koziarz.com · 14/09/2026I added the UP, DOWN, ESCAPE, and ENTER commands which look silly when you're typing away on the console. But when I created macros in my terminal program to emit those strings, suddenly you had the coin door buttons on your PC's F-keys =) That made writing the test/audit system a LOT easier. 180
Louis Koziarz @koziarz.com · 14/09/2026Obscure Pinball 2000 artifact I found in a box today: a custom boot ROM for the SMC8416 network card in our development machines. This would allow us to boot CPUs over the network during development, as well as other things we had planned. 🙁 51179
Louis Koziarz @koziarz.com · 13/09/2026I asked LED if there was a VidKidz connection to PERC and High Speed, he clarified that he was at Williams at that time when he wrote PERC, and used a Gimix-ed version of that code to write Space Shuttle and High Speed. Then Jarvis used it for F-14 Tomcat. 140
Louis Koziarz @koziarz.com · 13/09/2026Bummer! Maybe next time. I'm curious why coin-op hardware doesn't have much of a presence at this show other than MAME devices. The spectrum of devices is insane. Like someone recreated Bob Bishop's Tic-Tac-Dough game show set. 🤩 020
Louis Koziarz @koziarz.com · 13/09/2026RALF's owner also told me he's been in contact with the person that owns the other two Gimix boxes, MYKE and PSINDY. Stuff is getting archived! 🤯 1130
Louis Koziarz @koziarz.com · 13/09/2026And the new owner kept the Grand Lizard drop target sticker 😍 050
Louis Koziarz @koziarz.com · 13/09/2026Had an awesome find at #vcfmw today. The old Vid Kidz RALF machine looking all cleaned up and enjoying retirement! He's in very good hands now. www.backglass.org/duncan/gimix/ 2130
Louis Koziarz @koziarz.com · 27/08/2026Test games usually had mechanical problems, and an attendant might give out service credits to compensate. The Williams door switch had a UX problem: in a dark arcade you might miss the credit button and accidentally lower the game volume instead. 100
Louis Koziarz @koziarz.com · 25/08/2026The kid has moved off to college and I have inherited a hedgehog. 090
Louis Koziarz @koziarz.com · 12/08/2026We negotiated to have PLD's company name and logo on Monopoly, which kind of forced Gary's hand. But at this point in history it was a matter of doing whatever it took to keep sales up and the factory open. 050
Louis Koziarz @koziarz.com · 12/08/2026It's an interesting historical project to figure out what was the first pinball to have the designer's name on it, and then other team members after that. Kirk goes on about his struggle with Gary Stern to put his name on Stars (1978), and we know that Gary has always been reluctant to do this. 180
Louis Koziarz @koziarz.com · 11/08/2026Going through my pinball files, I found a photocopied article. It was a 1985 PlayMeter interview with designer Steve Kirk about the "creative crisis in coin-op". It must have been circulated at Williams when it came out. I used to read Kordek's library during downtime and this was in there. (more) 1140
Louis Koziarz @koziarz.com · 28/07/2026The flipper code is both flippers, then 23R-1L-26R-1L-25R-1L-28R. Flippers move the fireman, the falling/burning babies bounce on their own since I didn't finish the collision logic. Game ends on it's own after some amount of time. Have fun. 1284
Louis Koziarz @koziarz.com · 28/07/2026Super hidden easter egg in Jack*Bot: This was a tribute to Game & Watch "Fire!", the first Nintendo title I ever owned. I used it as a coding exercise while learning WPC system calls and dot-matrix programming, then made it a full easter egg in attract mode. Which got me in trouble. (more) 15520
Louis Koziarz @koziarz.com · 25/07/2026Given the fact that the river went right by the United/Williams plant AND a power company station full of PCB-leaking transformers, there's no way I would swim in this part of the river. We used to look out the windows during -20°F polar vortex storms and the river... did not freeze. 130
Louis Koziarz @koziarz.com · 25/07/2026Williams/Bally/Midway is gone. WMS is no more. But one artifact remains: WMS donated $2 million to the Park District to name the new boathouse on the Chicago River, opposite from the factory. Designed by famous Chicago architect Jeanne Gang. studiogang.com/projects/wms... 1384
Louis Koziarz @koziarz.com · 23/07/2026The sales material brags about the technical ability of the PCB facility, but the photos are all of System 11 pinball boards being stuffed and tested. Hawes also notes that WIT (the electronics arm of WMS) also built modems for USRobotics and... Apple. Still tracking these models down. 130
Louis Koziarz @koziarz.com · 23/07/2026That's another fun rabbit hole. I have some info. These emerged when some laws changed and allowed businesses to own their own payphone equipment. So Williams jumped in around 85-86, probably as a hedge against pinball failing again. They managed to build some number of phones. 130
Louis Koziarz @koziarz.com · 23/07/2026Another fun Bally acquisition was the Barnaby's Pizza chain in the mid 80s. They remodelled a handful of stores into "TomFoolery", a hybrid restaurant/arcade with a game room full of Bally/Midway titles of course. And they REALLY leaned into the Pac-Man connection. I went a few times, it was neat. 172
Louis Koziarz @koziarz.com · 23/07/2026Neil Nicastro also didn't know or understand pinball history. Everyone else around him was VERY aware that Tom Nieman rescued Bally Pinball, and really the whole pinball industry, from a lackluster future by introducing licensed properties to their line. 1100
Louis Koziarz @koziarz.com · 22/07/2026That moment was the perfect intersection of "yeah we're following the security rules" and "who the fuck cares?" Dwight Sullivan took his office door home. 170
Louis Koziarz @koziarz.com · 22/07/2026I never heard this quote from Nicastro but it's incredibly ironic. Once the movie licensing money was rolling in Neil got on a tear and started shoving licenses down the throats of the design teams. "Hey, Crichton wrote Jurassic Park and that was a smash. We're buying Congo and you're gonna do it." 161
Louis Koziarz @koziarz.com · 20/07/2026"Do you mind taking this with you to the factory?" "No problem. Anything important?" "Just a quarter million dollars worth of flash memory" 😳 070
Louis Koziarz @koziarz.com · 14/07/2026Joey had a thing for microwaves. Note the other DE inside jokes and easter eggs in this endscreen from TA. 151
Louis Koziarz @koziarz.com · 14/07/2026"...or Cruise Ship fatality." The cruise ship fatality was Joe, we had heard these stories that Kaminkow was shopping an action movie script he wrote, similar to "Under Siege" but takes place on a cruise ship. The ship had a room-sized microwave oven (why?) where the villain meets his demise. 181
Louis Koziarz @koziarz.com · 06/07/2026We can love/hate private equity but it really saved the big two companies from completely disappearing when times got tough a while back. And yeah, now they expect a ROI and $10K games + subscriptions are the way to do it. There'd be no more pinball otherwise - street locations are a dead end. (pun) 100
Louis Koziarz @koziarz.com · 01/07/2026Phillips' Law: If your design has an I2C bus it will take 20% of your design time but cause 80% of your bring-up headaches. 😖 020
Louis Koziarz @koziarz.com · 30/06/2026PLD, post-Monopoly. We finally set up our new office and had some space to think and work. And now we needed to start designing the next game ASAP. 1180
Louis Koziarz @koziarz.com · 29/06/2026Swiss Maid Bakery! Looks like they changed hands but the building looks the same. Best cheese danish in the county. The lady behind the counter had our order ready to go most mornings. 100
Louis Koziarz @koziarz.com · 29/06/2026The fun part about being that far out is we would regularly encounter drunken Cubs fans that passed out on the train after a game and wound up at the end of the line. "Where the hell am I?" We would ask ourselves the same thing from time to time. 171
Louis Koziarz @koziarz.com · 29/06/2026PLD, Post-Monopoly. With the game in production and some pinball money coming in, Pat decided it was time to get out of the garage. Or his family decided we had to go. Probably both. We moved to an office building in downtown Harvard, IL, sharing the building with a hair salon and a psychologist. 280
Louis Koziarz @koziarz.com · 29/06/2026I worked next door to the ComEd plant that served the neighborhoods near Wrigley Field and Tom Skilling's studio @ WGN TV. The power grid was so old and overloaded that transformers were exploding. Chicago Fire set up hoses to try and keep the remaining ones cooled down. 000