The 5 games in redump I know of with Copy Blockbuster (there don't seem to be any more, thankfully? Other than undumped regional versions)
Pizza Syndicate (specifically just Germany and Italy):
http://redump.org/disc/40426/
http://redump.org/disc/76708/
Gute Zeiten, schlechte Zeiten Vol. 2 (Germany)
http://redump.org/disc/108209/
Gute Zeiten, schlechte Zeiten - Fun Pack (Germany)
http://redump.org/disc/108206/
Pizza Syndicate - Mission CD - Mehr Biss (Germany)
http://redump.org/disc/97572/
Swing Plus - Total Mindcontrol (Germany)
http://redump.org/disc/97593/
I first noticed these games because they all (aside from base Pizza Syndicate) have a ton of errors, but around the same amount, and a second data track that's exactly 11133 sectors.
Not sure if Copy Blockbuster is specifically an in-house thing or some protection offered by another company; either way, only these 5 Software 2000 games seem to use it. Brief writeup from a user about how it works (mainly details software side of things, but does describe some relevant stuff for redump) https://cohost.org/caralynx/post/305509 … ration-piz (IA link if cohost isn't working: https://web.archive.org/web/20241126023 … ration-piz ).
When I brought them up, MoriGM mentioned that he had Swing Plus, but couldn't submit it to redump due to some descramble errors. Upon DMing him about it, it turns out that DiC 2021, DiC 2024, and redumper all produce different hashes. Despite this, each dumping program is always consistent with itself between dumps. He dumped four different times on redumper and they all matched each other, and did not seem to have C2/read errors. Most notably, his DiC 2021 dump matched the existing dump. He also reports having the exact same ringcode as the existing Swing Plus dump, so it's definitely the same disc.
I reached out to the person who wrote that cohost post, and they told me this:
[My version of Pizza Syndicate] is the French version, which I don't think has been catalogued by Redump. I managed to get a Plextor drive a few months later, and in track 2 it's got an invalid MSF and data filled with 0xaa, which is why it couldn't be read out normally.
This seems to be consistent with Mori's logs (attached to this post). This also indicates that the existing Pizza Syndicate germany and italy dumps probably also need to be redumped, despite apparently having 0 errors.
I understand that it might not be viable to get usurper to redump all of their discs, but at the very least, it would be nice to have a decision so Mori can submit his Swing Plus disc, and also so it can be noted that all the others need redumping.
Tl;dr these 5 games use copy protection involving intentional MSF errors and a few other quirks, and it appears that older DiC, newer DiC, and redumper all split them differently, so they all likely need to be redumped, and a decision should be made on how to actually properly split these dumps.
(DiC 2024 logs (too large to attach to forum post): https://mega.nz/file/DA1n2BjB#1h7ftSPCG … 8SBpMLeUjY )