Dreamcast Conversion is a complete overhaul of Sonic Adventure DX that makes it look like the original Dreamcast version of Sonic Adventure. This is done by reimplementing Dreamcast assets (levels, textures, object models, special effects and branding) in the PC version. A companion mod recreates events and challenges that were previously only available on the Dreamcast. Another companion mod replaces the majority of ingame sound effects with higher-quality sounds ripped from the Dreamcast version. All of the above (and more!) can be downloaded and installed in one go using a universal installer developed with the Dreamcast mod pack in mind.

Note: This page is dedicated to Dreamcast Conversion only. Lantern Engine (Dreamcast lighting) and Dreamcast Characters Pack, which are recommended for use with this mod, are separate mods developed and maintained by their respective authors. Dreamcast DLCs, HD GUI 2 and Sound Overhaul 2, which are maintained by me, are also separate mods at the moment. However, you can get all these mods together by using the installer.

Dreamcast Conversion and other 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 / Manual install

What's still missing / Bug tracker / Dreamcast SA1 vs SADX

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This release is for the original Dreamcast game, not SADX PC. A PC version of the challenge will be available at a later date.

Today I’m releasing something a bit special. This is the first fully custom* Dreamcast Sonic Adventure DLC that adds a new challenge without hacking the base game. It’s built like the official SA1 DLCs, and it makes use of SA1’s internal system to add objects and challenges to the game.

Download for emulators or transfer from PC

VMI file download for Dreamcast browser

To stay true to the spirit of official SA1 DLCs I’d like to make this a contest with a “real” (though merely symbolic) prize. To participate, simply record your playthrough of this challenge and share the video. You can play it on an emulator or on a real Dreamcast. The fastest player who beats the challenge in the shortest amount of time will get a free Sonic Adventure DX Steam key from me.

The contest will run until September 23rd, 0:00 (UTC). The deadline may be extended depending on the number of entries.
Submit your results here

To get started, you need to import the file SONICADV_515.VMS or SONICADV_515.DCI to your memory card. On PC you can use a memory card editor (such as redream's save manager). To play it on hardware you could burn the file to a CD together with Dream Explorer, or use an SD card adapter with DreamShell. If your Dreamcast is connected to the Internet, you can download it from the official webpage directly from Sonic Adventure!

This DLC was made using a tool that I’ve been developing during the last several days. Once the tool is released you will be able to make your own DLCs for Sonic Adventure from scratch (within the limits of the game’s DLC system of course)!

*Technically it’s not the first edit of a DLC, but it is the first DLC that adds custom objectives and makes extensive use of the DLC system rather than edits object properties. Huge thanks to Sappharad for figuring out the integrity check for the DLCs, which made this whole thing possible.

Credits:
-Darksecond for figuring out SA1 DLC and rank data encryption and posting it on ASSEMbler
-Sappharad for providing C# code to decrypt SA1 DLCs and for cracking the integrity check
-Daguar for giving me a hint on where to look for DLC item table
-Exant for making a lightweight "sitting Chao" model
-The graphics are based on Sonic Adventure (+DX) assets

Enjoy!

PkR

Sound Overhaul 3 release

Sound Overhaul 3 release

News

A major update for Sound Overhaul has been released

Update 11 release!

Update 11 release!

News 2 comments

A new update for Dreamcast Conversion has been released

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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Dreamcast Conversion Update 10 (old version)

Dreamcast Conversion Update 10 (old version)

Full Version 1 comment

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...

Dreamcast Conversion Update 8 (old version)

Dreamcast Conversion Update 8 (old version)

Full Version 1 comment

A compilation of fixes, enhancements and new mods for Dreamcast Conversion introduced after Update 7. Note that this is only the main package that includes...

Dreamcast Conversion Update 7 (old version)

Dreamcast Conversion Update 7 (old 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...

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ReptileMedais
ReptileMedais

I might be crazy but I could have sworn there used to be an option to set the character's voice that says opening sega jungle/menu voice to be random on each start up in the dreamcast conversion mod. Could someone tell me where to find that option.

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PiKeyAr Creator
PiKeyAr

It's an option in the "Dreamcast DLCs" mod.

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ReptileMedais
ReptileMedais

Great thank you very much. on another note SADX freezes for a couple seconds every now and again do you know what might be causing that

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PiKeyAr Creator
PiKeyAr

It could be a lot of things, so I'm not sure.

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ViperAcidZX
ViperAcidZX

Is it just me or does SADX Mod Installer has frame-pacing and performance issues when installing the Dreamcast Conversion mod preset? I never had this issue with BetterSADX with its Dreamcast Conversion preset, and my PC is more than capable of playing Sonic Adventure DX, vanilla (when the Steam version is handicapping itself to ~48 FPS) and modded with BetterSADX.

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PiKeyAr Creator
PiKeyAr

SADX Mod Installer in itself doesn't do anything that would affect framerate like that. It could be an issue with the game's configuration, or one or more of the mods misbehaving. If the game's configuration and mod setup are the same, it's identical to BetterSADX. It can't really be any different since it's the same version of the game.
One setting that affects performance significantly (which, I must add, is disabled by default unless you set it on manually before) is the "Resizable window" option in the Mod Manager. If you're having performance issues, I recommend turning it off.
There's also a "fullscreen optimization" thing in newer versions of Windows 10 that tends to affect the game's performance negatively, but the installer disables that automatically. It might get re-enabled if you move the game's folder after using the installer. You can check the exe file's properties in the compatibility tab to see if it's enabled.

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ViperAcidZX
ViperAcidZX

I found the cause of the frame-pacing issues, it seems that the newer d3d8to9 by crosire seemed to be the cause of it; I used the older version that was in BetterSADX (v1.10.1 instead of v1.11.0 that was included with SADX Mod Installer) and that fixed the performance/frame-pacing issues. I already had "Resizable window" disabled in SADX Mod Loader and "Fullscreen optimization" disabled on the game's executable as well and neither fixed the issue up until downgrading the included d3d8to9 to an older version.

I do want to report another different issue though, and it's with the AppLauncher tool's controller remapping function with DualShock 4 controllers included with SADX Mod Installer. I tried to use one and try to remap controls with it, but the tool registers Right Analog Stick Up is always being pressed without me ever touching anything on the DualShock 4, and the tool causes button placements to be wrong as well, and the aforementioned remapping problem caused by the Right Analog Stick. There's also no vibration too with DualShock 4 controllers, despite being wrapped to SDL2 with the Input Mod. The problem happened with a V2 (Generation 4) DualShock 4 controller connected via Bluetooth, though I'd imagine it could happen to with a V1 DualShock 4 controller as well.

Thank you for taking the time to help with the other issue I had though with the game's performance and frame-pacing issues.

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PiKeyAr Creator
PiKeyAr

That's bizarre, but it could indeed be an issue with d3d8to9. I've edited the script on the server to download an older version of the DLL that I used on my test SADX installation.

As for the DS4 controller issues, I don't know about vibration but you can try two things to fix bindings in the launcher:
1) Click the "DInput" button on the right and it might be able to detect the axes correctly.
2) If it doesn't work, you can right click the blue squares on top of the controller image, and select the desired axis/button manually.

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ViperAcidZX
ViperAcidZX

I tried switching the DualShock 4 controller to DirectInput mode in the AppLauncher tool see if that fixed the axis problem, and sadly it did not for me. I had to come up with a weird workaround because of this issue by doing the following for a DualShock 4 controller:

1) Unbind the problematic axis that the AppLauncher tool was picking the ghost input from (in my case, it was "Axis 5 (U)-").

2) Hold down the button I want to remap to its proper place as shown in the controller screen (e.g. holding down the Options button before left-clicking the Start button's icon on the screen) and then repeating this for all the other buttons, D-pad, and stick axes until only the RT/R2 button was left.

3) After correctly mapping all the other buttons, D-pad, and stick axes, I had to manually assign RT/R2 as "Axis 6 (V)+" by right-clicking its icon in on the screen. The result afterwards: I.imgur.com

After having done this, the DualShock 4 controller finally cooperated and worked properly in the game despite lack of vibration support, though I think this may have an unintended side-effect of jumbling XInput controls as a result unless I restore the XInput settings back to default (see: I.imgur.com )

EDIT: A similar problem also happens with Nintendo Switch Pro controllers.

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PiKeyAr Creator
PiKeyAr

I had an idea on how I could work around it. Here's a test version of the launcher EXE: Dcmods.unreliable.network
If you replace AppLauncher.exe in your game folder with this one and run it, does it detect your axes properly? Make sure you aren't pressing anything on the controller when you click any of the squares.

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ViperAcidZX
ViperAcidZX

Sorry to bug you again PkR but the problems with DualShock 4 controllers starting happening again after I did a clean re-install of SADX with the latest build of SADX Mod Installer and sadly the link to test version of the AppLauncher tool is no longer available.

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ViperAcidZX
ViperAcidZX

Aside from Windows being paranoid when launching the test version the launcher executable, and this one instance where, while trying to confirm everything was working on a DualShock 4 controller, it set the Right Stick Axis Left to "Axis 4-" out of nowhere, the DualShock 4 controller works as intended with this version of the launcher. There is also a minor issue where button presses, on both keyboard and controllers, wouldn't appear in the control GUI options in the launcher (e.g. pressing X and A buttons on an XInput controller would only show A being pressed on the GUI, holding holding down multiple keys cancel each other out), so I was wondering if that could be looked into as well? Would it be okay to suggest some other things for this launcher?

• The sliders in the GUI don't seem to register dragging orange-colored bar when holding it down via Left-click, so could it be possible to implement Left-click dragging for the sliders?

• There isn't an option for the "Force 4:3 Aspect-Ratio" on the GUI so I was wondering if that could be implemented as well so it can be toggled without having to go into SADX Mod Loader to enable/disable it (preferably have it off by default)?

Thank you for helping and fixing the issues with DualShock 4 controllers with the launcher executable, PiKeyAr!

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