Sonic CD changelog

v1.2.1

This is a minor update to the previous release which addresses the following:

• Fixes an issue where using the Data.rsdk of the PC version with hardware renderer enabled, then pausing and unpausing in any Tidal Tempest zone, would cause the entire screen to flash constantly.
• The fix has the added benefit of making Tidal Tempest visible with the PC Data.rsdk and HW renderer, however there are some slight visual errors, such as a lack of water discoloration and waterfalls not animating, but will not affect progression. To fix these errors, use the mobile Data.rsdk which, as a reminder, will also make the special stage floors draw correctly.

If you're upgrading from an older version (pre-1.2.0), delete the existing settings.ini to ensure stability.

Refer to the README for further instructions.

FBI QR code (for remote install)

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This is the third release of the updated Sonic CD 3DS port.

Changelog

• Now built on the most recent decomp source, as of Feb 2025
• FMV playback (Currently slow on O3DS and choppy on N3DS, use ffmpeg to scale down OGVs)
• Mods are now fully supported, install them the same way you would usually (in the mods folder)
• Also copy the decompiled scripts to the Scripts folder from here
• Software renderer now supported, but slow special stages on N3DS, and slow in general on O3DS
• This isn't really useful when the hardware renderer exists, but is just nice to have
• Navigation is now bound to both the circle pad and the dpad by default
• Fixed special stage backgrounds rendering incorrect when stereo 3D was on
• Fixed rendering in the game pause menu

If you're upgrading from an older version, delete the existing settings.ini to ensure stability.

Refer to the README for further instructions.

FBI QR code (for remote install)

qr-code

Edit 2026/06: The release was recompiled to fix an oversight where the compiler flag RETRO_AUTOBUILD was required to be set when building for distribution. To build and enable the flag without altering the source, this make command was used:
make ARCH="-DRSDK_AUTOBUILD=1 -march=armv6k -mtune=mpcore -mfloat-abi=hard -mtp=soft"

This is the second release of the newer Sonic CD 3DS port.

Changelog

• Experimental stereoscopic 3D support
• Fixed an issue where the 3DS would hang indefinitely while trying to close the game from the HOME menu or powering the system off mid-game.

Refer to the README for instructions on how to get the game up and running, as well as what is and isn't supported.

FBI QR code (for remote install)

qr-code

This is the first release of the newer Sonic CD 3DS port.
Refer to the README for instructions on how to get the game up and running, as well as what is and isn't supported.

FBI QR code (for remote install)

qr-code