Dreamcast Conversion is a complete overhaul of Sonic Adventure DX that makes it look and sound like the original Dreamcast version of Sonic Adventure. This is done by reimplementing Dreamcast assets (levels, textures, sounds, object models, special effects and branding) in the PC version. The modpack includes optional custom HD textures for the majority of ingame menus and other GUI assets. A companion mod recreates events and challenges that were previously only available on the Dreamcast. All of the above (and more!) can be downloaded and installed in one go using a universal installer developed with this mod pack in mind.

Dreamcast Conversion and related mods are designed for use with SADX Mod Loader and the 2004 PC port of SADX. The installer can convert the Steam version of SADX to the 2004 version, which supports the Mod Loader.

Installer / Changelog / FAQ / Troubleshooting / Dreamcast SA1 vs SADX

Manual install / What's still missing / Bug tracker / Author's Twitter

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Update 10 release!

News 5 comments

Update 10 for Dreamcast Conversion is now available!

Hi there!

I'm happy to present you another major update for Dreamcast Conversion.

This update uses the latest Mod Loader functionality, so make sure you update SADX Mod Loader as well!

Here's a list of ways you can get the update:

  • If you update through the Mod Loader, you already have it!
  • You can use the installer, which will set everything up for you automatically.
  • If you want to set up the mods manually you can download the package for manual install.
  • If you want an alternative download for manual install, you can also use this link to get the latest development build* of Dreamcast Conversion (other mods not included).

*The development builds are usually the same as the builds you get through the Mod Loader, but sometimes they get updated slightly faster because they rebuild automatically every time I push changes to the source code.

This update was long overdue so it's quite massive. Here's a list of major things that happened to the mod since Update 9 (see the changelog for more details):

  • All PVM and PVR files in the mod are now PRS compressed, which reduces the base mod size from ~400MB to ~250MB! This was made possible thanks to recent additions to the Mod Loader by SonicFreak94. I've also reworked the mod to optimize texture usage and make it compatible with most PRS files from the original Dreamcast game. In addition, I've reworked the "SADX Style Water" system to reduce the size of the mod even further and make it easier to edit SADX style water textures.
  • If you've read this post on Dreamcastify you know that the enhancements introduced in SADX - namely 60 FPS and skippable cutscenes - are somewhat broken and brought a few problems that didn't exist in the original game. I did my best to fix all of these problems. Post-cutscene camera transitions have been restored, and there's now an optional fade to black to make cutscene skipping smoother. The fade to black also works for skipping videos.
  • Together with Sonikko we went through the entire game multiple times and fixed an enormous number of things that were incorrectly sped up due to their code not being adjusted for the increased framerate in SADX. This affects a lot of things - from Tails' tails and the tornado in Windy Valley to special effects, animals and badniks. During the hunt for sped up objects we also compared the game side by side with a lossless recording of the Dreamcast version, which helped spot a few bugs and inaccuracies (such as this, this and this) that are now fixed.
  • The E101R and ZERO boss fights are a bit special in both versions of the game because they use external models in .NB files, and the Dreamcast version also uses textures in non-standard .PB archives. I reverse engineered the .PB format and extracted those textures, so now ZERO and E101R use higher quality textures from the Dreamcast version. I've also fixed a lot of visual issues and restored several transparency effects for both bosses, which now look much better than before.
  • Some progress on Chao stuff has been made. The mod now restores models for Chao eggs (the ones that existed in SA1) and optionally replaces some fruit models with models from SA1. The common fruit now uses all of the textures meant for different stages of its growth. I've also restored some objects in Chao Race.
  • The subtitle font has been restored, including both Impress for English and Comic Sans for other European languages. I've also disabled the fake font smoothing that made the subtitles look washed out in comparison to the original game. Note that the font is still going to look jagged because of the way the font system works in SADX - we can't "HDify" the subtitle font yet.
  • Recently we found out that the intro movie in SADX, despite being higher quality than the SA1 intro, is actually based on an unfinished version of the intro similar to the one used in the "Autodemo" prototype! But thanks to the efforts of McAleeCh, who recreated the entire intro using multiple sources, you can enjoy the original Dreamcast intro in the highest quality possible. If you want to go 100% accurate, you can also use the original (lower quality) Dreamcast intro converted from SA1 SFD files without recompression.
  • Several new mod config options were added, such as the ability to select different title screen layouts, optional window title change etc.
  • Some other additions include more accurate credit screens (with company logos), 1:1 recreation of all original SA1 tutorial screens as well as various minor accuracy tweaks, such as the color of the FMVs.

I had no idea that there would be an Update 10 for Dreamcast Conversion. As of now, I feel like the main work on the mod is done. But, as MainMemory said, even if the game is already 99% accurate to the Dreamcast version there's always a way to make it 99.99%. So I don't know whether this is really the last update for the mod, or it's only the beginning of something new. Maybe the latter, because there's been some exciting development going on in other projects lately. At some point we may be able to enjoy SADX without transparency issues. Someday we might also be able to recreate the lighting 100% accurately (it's already 99%). Perhaps someday the original Chao system will be reintroduced in SADX. Until then, I'll keep maintaining the mod and looking for things to fix or restore.

In the meantime, enjoy the update!

PkR

Install SADX mods easily with this tool

Install SADX mods easily with this tool

News 1 comment

A new installer is now available for easy setup of the Mod Loader and DC mods.

Update 9 and important information

Update 9 and important information

News 1 comment

Dreamcast Conversion has become a single mod, read this for more information on how to update.

Project FAQ (updated March 3)

Project FAQ (updated March 3)

News 1 comment

Frequently asked questions about Dreamcast Conversion

Troubleshooting guide (updated January 31)

Troubleshooting guide (updated January 31)

QA/Testing Tutorial 1 comment

Follow this guide if you are experiencing issues with Dreamcast mods

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SADX Mods Offline Installer

SADX Mods Offline Installer

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This is the last offline installer package uploaded to this site. From now on the offline package will be available from a direct constant URL - check...

Dreamcast Conversion Update 10 (manual install)

Dreamcast Conversion Update 10 (manual install)

Full Version

A package for manual install containing Dreamcast Conversion, Sound Overhaul 2, HD GUI 2 and Dreamcast DLCs. Note that there are also other mods that...

SADX Mods Offline Installer (Apr 18)

SADX Mods Offline Installer (Apr 18)

Installer Tool 1 comment

This is an all-in-one installer package that can be used on any version of SADX to install Dreamcast Conversion and other mods. This update introduces...

SADX Mods Offline Installer (Apr 10)

SADX Mods Offline Installer (Apr 10)

Installer Tool

This is an all-in-one installer package that can be used on any version of SADX to install Dreamcast Conversion and other mods. This update restores more...

SADX Mods Offline Installer (Mar 3)

SADX Mods Offline Installer (Mar 3)

Installer Tool 1 comment

This is an all-in-one installer package that can be used on any version of SADX to install Dreamcast Conversion and other mods. This version brings Dreamcast...

SADX Mods Offline Installer (Feb 10)

SADX Mods Offline Installer (Feb 10)

Installer Tool 1 comment

This is an all-in-one installer package that can be used on any version of SADX to install Dreamcast Conversion and other mods. This version adds an integrated...

Comments  (0 - 10 of 133)
Guest
Guest

Dreamcastify says Dreamcast Conversion includes other mods (DLC, GUI, etc.), but I thought that meant the mod itself included those mods. Since no one's going to be downloading the mod pack from here, could you just remove that note?

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Guest
Guest

wait, do you recommend getting the dev build off github?

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PiKeyAr Creator
PiKeyAr

The development builds are just an alternative way to get the full mod package for first-time manual installation. Content wise the builds are identical to what you get through the Mod Loader.

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Frisktaker
Frisktaker

So do you think there is any way to fix the Game Gear Games so they work properly at high resolutions? I'm just asking for opinion on whether it's even feasible, not asking YOU to be the one to do it. I guess it probably isn't possible, or someone would have already done it like ten years ago. Then again, I don't know how old the mod manager really is. I wish it could be done though. To me, the Game Gear games are the REAL extra content in SADX. Screw Mission Mode.

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PiKeyAr Creator
PiKeyAr

There most certainly is a way, but nobody cares enough to actually do it. Reverse engineering SADX is not always easy, especially when it comes to things that aren't understood too well, such as the Game Gear emulator.

I think you're probably in the minority if you think the Game Gear games are anything substantial. I barely know anyone who's played those games in SADX at all. In fact, I've even received requests to remove the Mini Game Collection menu altogether (which I probably won't do) to make it more like the original game.

Reply Good karma+1 vote
Frisktaker
Frisktaker

I love this mod. Definitely the best version of Sonic Adventure. Though I am hoping HD GUI has Game Gear support eventually. To me, the Game Gear games are the real bonus content of DX(I found it kind of funny that you acted like Mission Mode was more substantial on Dreamcastify. To me, the fact that you get to play every Sonic Game Gear game, even previously Japan only ones, is far better.) and the resolution thing is disappointing. As a side note, your avatar looks kinda familiar. Gonna make a wild guess, but Sergeant Frog?

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Frisktaker
Frisktaker

So I know your opinion of SA1 vs SADX(I read Dreamcastify.), but how well did SA2B fare? Was it less disappointing? I haven't seen anyone making a SA2 Dreamcast Conversion mod, so I assume they did a better job there.

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PiKeyAr Creator
PiKeyAr

SA2->SA2B is less of a disaster than SA1->SADX, and it has a few legitimate improvements (such as more miscellaneous scenery in levels), but in some areas it's almost as bad as SADX.

The Gamecube version (and consequently the PC version) suffers from lower texture quality, but to a lesser extent than SADX, and some textures appear to be better than their DC counterparts. SA2B has some lighting downgrades compared to the original game - several cutscenes in the game have strange looking lighting, and some levels have broken lighting and/or missing fog. Several cutscene effects as well as the main menu are implemented poorly (480p video layered on top of the scene instead of real effects like on the Dreamcast). There are also transparency errors, which are visible with Chaos Emeralds, Super Sonic's body and missing shadows in Sonic's prison cell. I'm not too familiar with SA2B so you might want to ask SpeepsHIGHWAY instead - she's done quite a bit of documentation on SA2 vs SA2B stuff.

Regarding making a Dreamcast Conversion mod for SA2, well there are a few mods that restore Dreamcast assets (for example MainMemory made a DC models mod sometime ago), but SA2B modding is less advanced than SADX modding because 1) several things, such as the model format/conversion, are not understood well enough, and 2) not many people care about SA2/SA2B.

In my opinion, SA2 was already such a major step down in content quality in comparison to SA1 that there simply wasn't much stuff that they could break (but when they could break things, they did). I'm sure if there was a strong interest among modders to restore Dreamcast stuff in SA2B it would've materialized, but most people I know (including myself) just aren't interested in SA2.

Reply Good karma+2 votes
Frisktaker
Frisktaker

I see. I don't hate SA2 or anything. I didn't hate SADX either(though the original PC version does look like garbage from the screenshots). I had a lot of fun, though I prefer most of the Dreamcast look, except some things like the number panels and the switches that kind of look ugly to me in DC. You know, the ones that are black when not on. And a couple other things. Of course, you seem to despise SADX with the burning passion of a thousand suns, so you probably disagree. My favorite area out of the little I have messed around with it is Casinopolis Sewers. I hope the HD GUI mod adds Chao and Game Gear Support soon(especially the latter). Also, do DLCs interfere with eachother or would it be possible to have an option to have them ALL on? I hope you continue to add stuff to the mod. Like for example having Time of Day affect Sunken Egg Carrier or the Chao Gardens. At any rate, I am glad you made this mod, and even gladder that you didn't JUST make it the Dreamcast version, but essentially the best of both worlds.
Last question, who is SpeepsHIGHWAY and do they have a neat website like Dreamcastify?
...man, I talk too much.

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Guest
Guest

If you could add new achievements/trophies to Sonic Adventure, what would they be?

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PiKeyAr Creator
PiKeyAr

I don't know, I'm not particularly a fan of achievements or trophies. I also prefer to avoid Steam, which is why all that stuff is kind of irrelevant to me.

Reply Good karma+1 vote
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Jun 21 2018

Update 10 for Dreamcast Conversion has been released! Moddb.com

Jun 19 2018

Watch out! You're gonna crash! Aah! T.co

Jun 18 2018

RT @ItsEasyActually: Posted a minor update to the DC Chars, removing the HQ textures and changing Metal Sonic's PVM name. No other fancy… T.co

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