Over on Pinside and Maaca I am maintaining threads where I compile fresh code modifications for old pinball games. Some are minor ROM mods, some are full rewrites, some require hardware mods. I will not be updating the list here, but just for the sake of browsing here is where it currently stands.
Available:
- Black Jack (1977, Bally) - Black Jack 2020 by @DickHamill - AVAILABLE https://pinside.com/pinball/forum/topic/black-jack-2020-new-code-for-bally-black-jack-1977
- Black Jack (1977, Bally) - code update by @Robotworkshop - AVAILABLE https://pinside.com/pinball/forum/topic/black-jack-1977-solid-state-club#post-4313201
- Eight Ball (1977, Bally) - Expanded rules using BSOS/.arduino by @BJM-Maxx - AVAILABLE https://pinside.com/pinball/forum/topic/eight-ball-plus-new-rules-for-bally-eight-ball
- Hot Tip (1977, Williams) - Completely new ruleset by @zacaj - AVAILABLE https://zacaj.com/p.php?id=66
- Mata Hari (1978, Bally) - Mata Hari 2020 by ??? - AVAILABLE https://github.com/BallySternOS/MataHari2020
- Playboy (1978, Bally) - Playboy 2020 by ??? - AVAILABLE https://github.com/BallySternOS/BallyPlayboy2020
- Stars (1978, Stern) - Stars 2020 by @DickHamill - AVAILABLE https://pinside.com/pinball/forum/topic/stars-2020-side-project-digital-sound
- Dracula (1979, Stern) - Competition rom and rules tweaks by @zacaj - AVAILABLE https://zacaj.com/p.php?id=19&title=Stern+Dracula+Tournament+Rom+V4
- Meteor (1979, Stern) - Meteor2021 by @DickHamill - AVAILABLE https://pinside.com/pinball/forum/topic/meteor-2021-new-code-for-stern-meteor-1979
- Trident (1979, Stern) - Trident 2020 by @DickHamill - AVAILABLE https://pinside.com/pinball/forum/topic/trident-2020-a-rewrite-of-stern-trident-1979
- Big Game (1980, Stern) - new rules + fixes by @slochar - AVAILABLE https://pinside.com/pinball/forum/topic/software-mod-for-stern-big-game
- Cheetah (1980, Stern) - Competition rom by @zacaj - AVAILABLE https://zacaj.com/p.php?id=65
- Flight 2000 (1980, Stern) - new rules + fixes by @slochar - AVAILABLE https://pinside.com/pinball/forum/topic/free-play-roms-for-classic-stern-games-link
- Galaxy (1980, Stern) - Galaxy2021 by @DickHamill - AVAILABLE https://tinyurl.com/237kbkwc
- Panthera (1980, Gottlieb) - system 80A + new ROMs by Davroux Brothers - AVAILABLE https://www.flipprojets.fr/Panthera_EN.php
- Silverball Mania (1980, Bally) - SilverBallMania2021 (arduino) by ??? - AVAILABLE https://github.com/BallySternOS/SilverBallMania2021
- Black Hole (1981, Gottlieb) - system 80A + new ROMs by Davroux Brothers - AVAILABLE https://www.flipprojets.fr/Blackhole_EN.php
- Dragonfist (1981, Stern) - new rules + fixes by @slochar - AVAILABLE https://pinside.com/pinball/forum/topic/new-revision-of-stern-dragonfist-software
- Eight Ball Deluxe (1981, Bally) - bug fix for players 2 and 4 by ??? - AVAILABLE https://www.ipdb.org/machine.cgi?gid=762
- Embryon (1981, Bally) - v92: 2x scoring during multiball by ??? - AVAILABLE https://www.ipdb.org/machine.cgi?gid=783
- Flash Gordon (1981, Bally) - Flash Gordon 2021 by @bluebomber - AVAILABLE https://pinside.com/pinball/forum/topic/flash-gordon-2021-re-imagined-code-for-bally-flash-gordon-1981
- Jungle Lord (1981, Williams) - new code by @idealjoker - AVAILABLE https://pinside.com/pinball/forum/topic/announce-jungle-lord-new-tricks-home-rom
- Mars God of War (1981, Gottlieb) - system 80A + new ROMs by Davroux Brothers - AVAILABLE https://www.flipprojets.fr/Mars_EN.php
- Caveman (1982, Gottlieb) - Caveman Evolution: new rules ROM by Davroux Brothers - AVAILABLE https://www.flipprojets.fr/Mars_EN.php
- Haunted House (1982, Gottlieb) - system 80A + new ROMs by Davroux Brothers - AVAILABLE https://www.flipprojets.fr/Hauntedhouse_EN.php
- Orbitor 1 (1982, Stern) - minimum time removed by @slochar - AVAILABLE https://www.ipdb.org/machine.cgi?id=1725
- Genesis (1986, Premier) - freeplay ROM by Davroux Brothers - AVAILABLE https://www.flipprojets.fr/Genesis_EN.php
- Pinbot (1986, Williams) - PEMBOT (new rules) by @idealjoker - AVAILABLE https://pinside.com/pinball/forum/topic/pembot-no-relation/
- Mousin' Around! (1989, Bally) - code update by @soren - AVAILABLE https://pinside.com/pinball/forum/topic/official-williams-and-bally-software-upgrades/page/12#post-6546119
- Funhouse (1990, Williams) - Funhouse: Rudy's Nightmare by @Pedretti_Gaming - AVAILABLE http://www.planetarypinball.com/mm5/merchant.mvc?Screen=PROD&Product_Code=PPM-KIT-RUDY-NIGHTMARE&Category_Code=GS-966
- Radical! (1990, Bally) - new rules by @soren - AVAILABLE https://pinside.com/pinball/forum/topic/new-radical-software-mod
- Star Trek (1991, Data East) - code tweaks + fixes by @ChadH - AVAILABLE https://www.pinballcode.com/
- The Machine: Bride of Pinbot (1991, Williams) - Bride of Pinbot 2.0 kit by Dutch Pinball - AVAILABLE https://pinside.com/pinball/machine/bride-of-pinbot-20
- Creature from the Black Lagoon (1992, Bally) - new rules by @soren - AVAILABLE https://dotsandloopspinball.com/software/
- Hook (1992, Data East) - code tweaks + fixes by @ChadH - AVAILABLE https://www.pinballcode.com/
- Lethal Weapon 3 (1992, Data East) - code tweaks + fixes by @ChadH - AVAILABLE https://www.pinballcode.com/
- Star Wars (1992, Data East) - code tweaks + fixes by @ChadH - AVAILABLE https://www.pinballcode.com/
- Judge Dredd (1993, Bally) - PROC full rewrite by @gstellenberg - AVAILABLE https://pinside.com/pinball/forum/topic/has-anyone-reworked-judge-dredd-gameplay#post-4797927
- Jurassic Park (1993, Data East) - code tweaks + fixes by @ChadH - AVAILABLE https://www.pinballcode.com/
- Tales from the Crypt (1993, Data East) - code tweaks + fixes by @ChadH - AVAILABLE https://www.pinballcode.com/
- Demolition Man (1994, Williams) - revision 7.0 by @soren - AVAILABLE https://pinside.com/pinball/forum/topic/official-williams-and-bally-software-upgrades/page/14#post-6809401
- Red & Ted’s Road Show (1994, Williams) - new rules by @soren - AVAILABLE https://dotsandloopspinball.com/software/
- The Who's Tommy Pinball Wizard (1994, Data East) - code tweaks + fixes by @ChadH - AVAILABLE https://www.pinballcode.com/
- Baywatch (1995, Sega) - code tweaks + fixes by @ChadH - AVAILABLE https://www.pinballcode.com/
- Theatre of Magic (1995, Bally) - code update by @soren - AVAILABLE https://pinside.com/pinball/forum/topic/official-williams-and-bally-software-upgrades/page/12#post-6546119
- Junk Yard (1996, Williams) - new rules by @soren - AVAILABLE https://dotsandloopspinball.com/software/
- No Good Gofers (1997, Williams) - NGG2.0 by @jamescardona - AVAILABLE https://pinside.com/pinball/forum/topic/ngg20-new-code-for-your-no-good-gofers-2020
- Cactus Canyon (1998, Bally) - Cactus Canyon Continued PROC rewrite by epthegeek - AVAILABLE https://github.com/epthegeek/cactuscanyon/
- Indiana Jones (2008, Stern) - PROC rules rewrite by @applejuice - AVAILABLE https://pinside.com/pinball/forum/topic/indiana-jones-stern-software-rewrite-port-over-the-journey/
- Paragon (1979, Bally) - new rules by @pinballhelp - IN PROGRESS http://pinballhelp.com/demo-of-custom-paragon-with-all-new-sound-rules/
- Stellar Wars (1979, Williams) - Expanded rules with arduino by @DickHamill - IN PROGRESS https://www.youtube.com/watch?v=XpsCpuH-teM
- Nine Ball (1980, Stern) - code rewrite by @slochar - IN PROGRESS https://pinside.com/pinball/forum/topic/9-ball-software-rewrite
- Catacomb (1981, Stern) - ROM tweaks by @slochar - IN PROGRESS https://pinside.com/pinball/forum/topic/software-mods-for-classic-stern-games
- Lightning (1981, Stern) - ROM tweaks by @slochar - IN PROGRESS https://pinside.com/pinball/forum/topic/software-mods-for-classic-stern-games
- Whirlwind (1990, Williams) - DMD mod + full rewrite by @applejuice - IN PROGRESS https://pinside.com/pinball/forum/topic/whirlwind-software-rewrite-the-journey
- Black Rose (1992, Bally) - Black Rose 2.0 : Skull and Bones by @jamescardona - IN PROGRESS https://pinside.com/pinball/forum/topic/skull-and-bones-new-code-for-your-black-rose-pinball-machine