Editing 2K Sports Games To Run on GDEMU

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louiea
noob
Posts: 1

Editing 2K Sports Games To Run on GDEMU

Post#1 » Wed Jan 22, 2020 11:36 am

Hello All - hopefully I am posting this in the correct forum.

Recently had an idea to try to extract files from the various 2K Sports games to edit rosters and update player photos in the game, then run the game off of the GDEMU. Could anyone help point me in the right direction of what tools I need to do so or has anyone ever attempted this before?

I know it has been done with 2K games for Xbox and PS, seems like it should be able to be done for Dreamcast.

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SMiTH
Vagabond
Posts: 703

Re: Editing 2K Sports Games To Run on GDEMU

Post#2 » Fri Jan 24, 2020 12:34 pm

here is a thread about modding 2k sports dc games:
http://www.cdrom-guide.com/forums/archi ... 79729.html

here is a thread about roster vmu saves:
viewtopic.php?f=21&t=11364

you could use japanese cake's gd-rom explorer to extract the .gdi data from track03.bin.
http://www.mediafire.com/file/6qpums8d3 ... 3.zip/file

*there are also scripts available for extracting .gdi files...

then for building the .gdi after you have modded files maybe try this? (i have never tried this b4)
https://projects.sappharad.com/tools/gdibuilder.html

*i think there are scripts available for building .gdi ??...

ppl have tried modding the roster for the nfl2k series on dc (editing the iso, not vmu save) in the past but eventually gave up on the projects.
i have always wanted to mod the uniforms, stadiums, etc. (basically add them from all the different nfl2k games)

my issue with the 2k sports games is trying to get them to boot as selfboot .cdi files for cd-r etc.
i have run into many issues doing this, i think the only way to do it properly since cd00 can't be found in hex (more than likely bin file is encrypted, not scrambled as descrambling does nothing)..is to add the main.bin file at the same LBA that was used in either the original echelon or kalisto release i do not remember...
1st_read is not the main bin file for the game.

have you ever wondered why no scene releases have ever been made of these games except the original kalisto, echelon releases? correct me if i am wrong and there are other releases???

now what might make all of this irrelevant is modding the .gdi and that way you would not need to bother with LBA and protections etc.

good luck with doing this mod..i would definitely be interested in playing a modded 2k game on dc.
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