This mod restores Dreamcast assets (levels, textures, sounds and some objects/effects) in Sonic Adventure DX PC. The main focus of this mod is porting Dreamcast Sonic Adventure Action Stages, Adventure Fields and boss arenas to SADX. Some level object ports have also been done to improve texture quality and restore missing detail, animations and effects. A companion mod called Sound Overhaul restores some of the deleted sounds and replaces most ingame sound effects with higher-quality sounds ripped from the Dreamcast version. The long-term goal of this project is to reproduce the Dreamcast SA1 experience in SADX PC as accurately as possible, including graphics, sound, branding etc. This mod is designed for use with SADX Mod Loader. It is split into several mini-mods which you can enable or disable independently.

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You can now play Dreamcast DLC content in SADX PC!

When the Dreamcast was still around, it had a lot of downloadable content for many games in its library. You would connect to the Internet using the Dreamcast's built-in model, launch a browser (often directly from the game) and download the content to your memory card (VMU). When placed on the VMU, those downloads added or unlocked new features in the game.

Sonic Adventure also had a lot of DLCs. There were simple event DLCs that added decorations to Station Square, and there were also time challenges (with real prizes!) sponsored by different companies. There were DLCs that added new music, level decorations and Twinkle Circuit tracks. Together with other online features of Sonic Adventure (leaderboards, Chao Black Market) the game world almost seemed alive. Although I personally didn't have a chance to experience it back then, even now I can tell there is something special about starting the game on Christmas eve and discovering that it plays Christmas carols. You can even find a Christmas greeting from the mayor of Station Square. For a 1998-1999 game, it really seems like Sega was ahead of everyone else, trying to make the game feel "connected" with the player and the world in ways that weren't common at the time.

Sadly we all know what happened to the Dreamcast. When the console died, the online services went offline as well. In recent years, the enthusiasts in the Dreamcast community have been restoring a lot of online functionality for different games, and if you have a Dreamcast that can connect to the Internet, you can have an almost authentic experience of what it was like to use Sonic Adventure's online features back in 1999-2000. Thankfully, the DLC content has also been preserved for the most part (except one event DLC that seems to have been lost to time), and if you have a Dreamcast you can play the majority of it. However, up until now there was no way to play the DLCs in the PC version.

Recently, thanks to sonicblur's tool for decrypting VMU downloads I was able to extract model, texture and sound data from SA1 downloads. Some time later Daguar pointed me to the structure in the DLC file that contained information about objects (position, rotation etc.), and soon the DLC content was understood well enough so I began work on recreating the DLCs as SADX mods.

Obviously the mods aren't exact 1:1 recreations. There is no Internet connectivity, and the results of time challenges are only displayed on screen. I also did my own take on the HUD/timer, which scales well in HD resolutions. Other than those, the recreations are pretty close to the original downloads because they use the exact same models and position data from the DLCs. So if you've never played the Dreamcast version and want to learn more about the DLCs, these mods will give you a fairly accurate impression of what they were like.

Here's a list of my DLC recreations for SADX:

1) Samba Grand Prix - this download was originally made to celebrate the release of Samba de Amigo on the Dreamcast. The mod adds an extra Twinkle Circuit track that you can play by going through the gate that appears in Station Square main area. When playing as Sonic, the usual Twinkle Circuit music will be replaced by an instrumental version of Super Sonic Racing. An additional feature of the mod that wasn't present in the Dreamcast DLC is access to the other Twinkle Circuits that were never officially unlocked in the original game or SADX. To access them, go to the same Samba GP gate as Tails, Knuckles, Amy or Gamma. You can still play the regular Twinkle Circuit course if you go to the Twinkle Park entrance.

2) Y2K Millenium Celebration - an event download to celebrate the arrival of a new millenium. Big golden rings were placed in different levels. They showed a message and played music from Sonic CD when you touched them. Although there's no counter to show how many rings you've found, it's still fun to look for them in different stages. Twitter's DLC of choice.

3) Famitsu Hide-and-Seek challenge - a contest sponsored by the Famitsu magazine in Japan. You have to find 5 pictures of a real-life hedgehog within a time limit. Before playing this on the PC version, make sure you've updated the "Dreamcast Station Square" mod!

4) QUO card challenge - the concept is similar to the Famitsu contest, but this time you have to find 6 QUO cards with the portrait of Hidekazu Yukawa (also known as Mr. Sega) in Station Square and Mystic Ruins. QUO is a kind of prepaid cards that can be used at convenience stores, hotels etc. nationwide in Japan. They're still around actually! To fully enjoy this challenge, make sure you're playing with the latest version of Sound Overhaul 2, as it adds Yukawa's ridiculous "Yuss!" voice clip that plays when you find a card.

5) Dreamcast Launch party - 3 very similar downloads released in Japan, the US and the UK to celebrate the Dreamcast launch. Places balloons and posters around Station Square.

6) AT&T "Sonic 2K Contest" part 1 - Assault on Speed Highway - a contest sponsored by AT&T and the Dreamcast magazine. Sonic has to run through a slightly modified version of Speed Highway Act 1 within a time limit. The level features AT&T banners and rotating platforms with AT&T logos on them.

7) AT&T "Sonic 2K Contest" part 2 - The Sonic2K Hide & Seek game - another contest where Knuckles has to find 4 treasures hidden in the Mystic Ruins main area.

8) AT&T "Sonic 2K Contest" part 3 - The Sonic2K Sand Hill Attack - the final contest that features a modified version of Tails' Sand Hill with 10 gates to go through within a time limit.

9) Reebok DMX challenge - a European contest sponsored by Reebok. You go to a modified version of Emerald Coast with Reebok banners and posters, and collect 5 pairs of shoes stolen by Dr. Robotnik. When you collect the first pair of shoes, the music changes to the track you hear when fighting other characters in the story. Pretty fun and challenging event.

10) Halloween event - a download that added graffiti and jack-o'-lanterns in Twinkle Park. There isn't any meaningful gameplay involved with this DLC, but it's still nice to have those decorations.

11) Christmas 98 (mod coming December 23) - a DLC that only came out in Japan. Places many small Christmas trees around Station Square that show messages and play music when you touch them.

12) Christmas 99 (mod coming December 17) - another Christmas download, but this time it places 4 large Christmas trees around Station Square that play music from NiGHTS and show a message when you touch them.

Download the mods here (the archive will be updated whenever new DLC mods are released)

Note! Please enable only ONE DLC mod at a time, otherwise the content will not activate. To access DLC content, please start the game in Adventure Mode.

Have fun!

PkR


Update 7 and wrapping up the Dreamcast project

Update 7 and wrapping up the Dreamcast project

News 1 comment

An update for Dreamcast Conversion is now available

Update 6 and other news

Update 6 and other news

News 1 comment

An update for Dreamcast Conversion has been released

Mod installer for SADX Steam and 2004

Mod installer for SADX Steam and 2004

News 2 comments

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

Update 5 is here!

Update 5 is here!

News 1 comment

An update for Dreamcast Conversion has been released

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Dreamcast Conversion Offline Installer (Sep 03)

Dreamcast Conversion Offline Installer (Sep 03)

Full Version

This is a setup program that installs SADX Mod Loader, Dreamcast Conversion and several other mods on any version of SADX.

Dreamcast Conversion Update 7 (current version)

Dreamcast Conversion Update 7 (current version)

Full Version 1 comment

A compilation of fixes, enhancements and new mods for Dreamcast Conversion introduced after Update 6. This is a full release. If you have a previous version...

Dreamcast Conversion Update 6 (old version)

Dreamcast Conversion Update 6 (old version)

Full Version 1 comment

A compilation of fixes, enhancements and new mods for Dreamcast Conversion introduced after Update 5. This is a full release. If you have a previous version...

Dreamcast Conversion Update 5 (old version)

Dreamcast Conversion Update 5 (old version)

Full Version 1 comment

A compilation of fixes, enhancements and new mods for Dreamcast Conversion introduced after Update 4. This is a full release. If you have a previous version...

Dreamcast Conversion Update 4 (old version)

Dreamcast Conversion Update 4 (old version)

Full Version 1 comment

A compilation of fixes, enhancements and new mods for Dreamcast Conversion introduced after Update 3. This is a full release. If you have a previous version...

Sound Overhaul 2 release (old version)

Sound Overhaul 2 release (old version)

Full Version 2 comments

This is a full release of Sound Overhaul 2, a mod that improves sound quality and restores missing sounds in SADX PC by using the sound files ripped from...

Comments  (0 - 10 of 37)
Darkspines147
Darkspines147

Yeah, this should make someone laugh... I was playing the Dreamcast version for a bit to test a recently purchased VMU, then went to the PC to check for Mod updates, started playing the PC version and totally forgot I was playing the PC version till I looked at the controller in my hands, LOL!

The VMU worked BTW. That should speak volumes about the quality and accuracy of the mods! I know I've praised these mods more than once already, but I'm not ashamed to praise them again!

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marcosvargas97
marcosvargas97

I played your DLC mods and they work perfectly.
I even recorded it: Youtube.com

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Piexter
Piexter

It is incredible that the modloader is already able to use the additional Dreamcast content! Would there be any way to perform custom dlcs? for example: to celebrate this compatibility or one for the 20 years of Sonic Adventure

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PiKeyAr Creator
PiKeyAr

The DLC mods are just mods programmed to do the same things as the original DLCs did. They only reuse the assets (models, textures etc.) and object layout from the actual DLCs. All the behavior had to be recreated manually. So in that sense, the DLC mods aren't different from any other mod made for the Mod Loader. It's totally possible to create custom events or missions for SADX PC, in fact it's been possible for years. It's just that nobody has bothered to create them.

As for making custom DLCs for the Dreamcast version, it's a lot harder and more limited but theoretically it's possible to edit textures, object placement and certain things like which sound/music ID the object plays when you touch it or what message it displays. The main problem with custom Dreamcast DLCs right now is the safety check the game does. If the DLC file has been modified, the game doesn't load it. If/when this check is understood and cracked, custom SA1 DLCs with the changes I described above will become possible.

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Guest
Guest

The Lantern Engine crashes my game at the character select screen and I do have d3d8.dll in the folder. I've tried everything. What can I do?

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PiKeyAr Creator
PiKeyAr

Either Lantern Engine or d3d8.dll is out of date. The latest version of d3d8to9 should work with the latest version of Lantern Engine.

Reply Good karma+1 vote
ThePuzzledBoy
ThePuzzledBoy

I've got a little problem when running this mod in XP: I can't run it at all.

Loading up the DC Conversion mods causes an error to pop up saying "sonic.exe has encountered a problem and needs to close. We are sorry for the inconvenience." It doesn't even show a white screen before the error.

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PiKeyAr Creator
PiKeyAr

Sorry, I'm generally not interested in supporting XP. I don't have any means to test mods on it, though I will take the necessary precautions to make them XP-compatible when I update them next time.

Reply Good karma+1 vote
ThePuzzledBoy
ThePuzzledBoy

If it helps, I took the time to enable each mod at a time and found Casinopolis to be the culprit.

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PiKeyAr Creator
PiKeyAr

So Casinopolis is the only mod that isn't working on XP right now?

Reply Good karma+1 vote
ThePuzzledBoy
ThePuzzledBoy

Yep, that's the only one.

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Latest tweets from @pkr_sadx

Why is it so hard for SEGA to make a game with NEW levels and Sonic 2 HD like graphics and call it Sonic 5 or something

Oct 18 2017

Sonic Adventure Halloween event for SADX PC Dcmods.unreliable.network T.co

Oct 17 2017

We're in the process of documenting the last Action Stage for the SADX Sins project. We'll be covering Adventure Fields and bosses next.

Oct 15 2017

"Sonic Adventure DX is an enhanced port of Dreamcast Sonic Adventure" T.co

Oct 14 2017

I revisited Duck Tales Remastered and now I cry because official Sonic remakes (if they ever happen) will probably never be that good.

Oct 14 2017

Would you like a "Gamecube Conversion" mod for SADX? CC @SonicFreak94

Oct 13 2017

"Inferior looking Dreamcast levels" T.co

Oct 12 2017

RT @ItsEasyActually: A new update to Dreamcast Characters! It's just a minor one involving a planned feature I forgot about. Enjoy! T.co

Oct 12 2017

Did you know that the Ice Cap textures in SADX are the same exact textures as in SA1 but desaturated? T.co

Oct 11 2017

The installer has been updated with an important bugfix, also it includes my DLC recreations as an option.

Oct 11 2017

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