Dreamcast-Talk.com

Update : Scud Race Dreamcast Tech demo release

Added 26 tech demo for SET 2 Dreamcast to use with Kamui Wrapper.

Duplicates and different versions of the same demo should be included in this archive. Not all of them work. No optimization work has been done for them.

The source code of the wrapper should be released before the end of the year.

Download here :

https://en.sega-dreamcast-info-games-pr ... ui-wrapper

Loloretro wrote:

colgate wrote:

Loloretro wrote:For a few years now, we have noticed that unknown Unreleased were in development on Dreamcast.

The hunting season could have started on Dreamcast with Deer Hunter !

Hoping one day to be able to practice this sport in our DC!

https://en.sega-dreamcast-info-games-pr ... st-version

Deer Avenger was not really unknown, SEGAWeb had picture from it back in 2001:

https://web.archive.org/web/20010202214 ... enger.html

Btw Laurent I have a bunch of pictures and links to different articles I collected back in 2001~2003, I think it might be helpful to you as you're creating a database of unreleased games, do you want me to share it?

Yes I do. Write me privately.

Thanks for Deer Avenger, it must be the only place where it is mentioned.

I had started to make a database here :

https://en.sega-dreamcast-info-games-pr ... -dreamcast

Great will do it soon, thank you for your great work!

Sent from my Pixel 3a XL using Tapatalk

Release and reverse engineering of Mortal Kombat 4 prototype for Dreamcast

@VincentNL was able to work on a mysterious Mortal Kombat 4 Dreamcast build in my possession which couldn’t boot up. The only way to learn more about this release, to make it talk, was to reverse engineer data .

I thought it was an Unreleased game. We had to make sure.

You can download it and read a remarkable reverse engineering work on this build below

https://en.sega-dreamcast-info-games-pr ... ld-reverse

Loloretro wrote:Release and reverse engineering of Mortal Kombat 4 prototype for Dreamcast

@VincentNL was able to work on a mysterious Mortal Kombat 4 Dreamcast build in my possession which couldn’t boot up. The only way to learn more about this release, to make it talk, was to reverse engineer data .

I thought it was an Unreleased game. We had to make sure.

You can download it and read a remarkable reverse engineering work on this build below

https://en.sega-dreamcast-info-games-pr ... ld-reverse

I noticed you mentioned a vertex difference. This could be because zeus used quads. Can you ask who ever did the vertex comparison how many triangle faces there is for gold vs 4? An example of it.

You make it sound like its the same topology but more vertex for the prototype. That doesnt make it higher quality if its the same amount of faces, just unoptimized

Also the pvr is set up for triangles and optimizing models to suit the hardware is more then 50% of the speed you get on pvr hardware.. Not use the sh4 to do the work but do it off console..

cloofoofoo wrote:

Loloretro wrote:Release and reverse engineering of Mortal Kombat 4 prototype for Dreamcast

@VincentNL was able to work on a mysterious Mortal Kombat 4 Dreamcast build in my possession which couldn’t boot up. The only way to learn more about this release, to make it talk, was to reverse engineer data .

I thought it was an Unreleased game. We had to make sure.

You can download it and read a remarkable reverse engineering work on this build below

https://en.sega-dreamcast-info-games-pr ... ld-reverse

I noticed you mentioned a vertex difference. This could be because zeus used quads. Can you ask who ever did the vertex comparison how many triangle faces there is for gold vs 4? An example of it.

You make it sound like its the same topology but more vertex for the prototype. That doesnt make it higher quality if its the same amount of faces, just unoptimized

The person who worked on this prototype is on this forum. I don't know how to tag a person here hi hi hi.

Ian Micheal wrote:Also the pvr is set up for triangles and optimizing models to suit the hardware is more then 50% of the speed you get on pvr hardware.. Not use the sh4 to do the work but do it off console..

What iam saying is if the gold model is example is 250 vert but 500 triangles and 4 is 560 verts but 500 triangle because the dc optimized model uses tristrips makes the gold model superior not inferior just because it has less verts doesnt mean its worse. Thats why iam asking if he can get a straight answer on the number of faces to make 100% sure. Otherwise its misleading.

cloofoofoo wrote:

Ian Micheal wrote:Also the pvr is set up for triangles and optimizing models to suit the hardware is more then 50% of the speed you get on pvr hardware.. Not use the sh4 to do the work but do it off console..

What iam saying is if the gold model is example is 250 vert but 500 triangles and 4 is 560 verts but 500 triangle because the dc optimized model uses tristrips makes the gold model superior not inferior just because it has less verts doesnt mean its worse. Thats why iam asking if he can get a straight answer on the number of faces to make 100% sure. Otherwise its misleading.

First of all allow me to say thank you Laurent! It's been a real blast to hack into this format and squeeze out something that can be visualized!

To provide a final answer regarding type and quantity of strips, face index struct should be completely reversed. We did try a number of face generation concepts with quad strip yielding the best results, but the visualization has too many errors to be accepted, so it's not meaningful to use as metric.


Vertex chunk is the only part that could be (manually) extracted from .GEO and compared against the other 2 versions, with a few seemingly smoother parts. Whatever happened from MK4 DC proto to MKG were changes to better suit DC hardware, just like texture format.

Said this, I've passed everything found to Ermaccer, which is a fellow reverser and veteran of MK4 modding scene. I'm sure with due time models will be propely extracted so we can have a definitive answer!

We were finally able to find the GD-R 1 of Ring: The Legend of Nibelungen Dreamcast, the GD-R 2 had already been released in 2020.
It looks like a re-release but it's not, disc 1 is a first.

We are still missing disc 3 in order to have an optimal gaming experience. It's so frustrating not to have the full game !

Make some noise in order to hopefully exhume it. We absolutely need it !

Last year, the release is not to my taste. This release of disc 1 allows me to pay tribute to the game as I should have done in 2020.

The article has also been rewritten to highlight this Unreleased as if it was a Castlevania :

https://en.sega-dreamcast-info-games-pr ... nibelungen

I had the opportunity to talk with producer/designer/writer of the Unreleased Dreamcast game Scariest Police Chases: Deadly Pursuit.

We learn more about its scenario, its development stage and its cancellation.

The GTA of the console ?

https://en.sega-dreamcast-info-games-pr ... -dreamcast