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Sonic CD cover art
Sonic CD. Sonic CD artwork © Sega, via IGDB. Unofficial site, not affiliated with the publisher.
PC port · Sega CD → PC

Sonic CD (2011) decompilation, RSDKv3

A full decompilation of Retro Engine v3 and the 2011 Sonic CD remaster for Windows, Mac, Linux and Android, with pixel-perfect display, remappable controls and mobile-only features.

WorkingDecompilationNeeds your own copyWorks on phonesv1.3.3Updated

You need your own copy of Sonic CD. This port only runs with files from a copy you own; there is no download or play button here. No copy? These play in your browser right away, no files needed: BO1 Zombies (vel.gg), GTA 3 Online (quenq III Web), The Simpsons: Hit & Run WASM.

What you need

Assets from an official release of Sonic CD you own: the 2011 Steam version, Sonic Origins (Steam, Epic, Switch) or the mobile versions. Plus a Windows, Mac, Linux or Android device.

Official releases ↗GitHub repository ↗

We do not host any files. Only download from the project's official source.

Every version of Sonic CD 6

  1. Sonic CD (2011) decompilation, RSDKv3This page

    WorkingDecompilation

    A Full Decompilation of Sonic CD (2011) & Retro Engine (v3)

    Runs on Windows (x64 and x86), macOS, LinuxNeeds files from a copy you own★ 7141.3.3 · Nov 2, 2025

    GitHub ↗

  2. RSDKv3-Script-Decompilation

    ActiveDecompilation

    ★ 139Last change Aug 13, 2026

    GitHub ↗

  3. Little Planet

    ActiveStatic recompilation

    Sonic the Hedgehog CD recompilation

    ★ 511.0 · Oct 11, 2026

    GitHub ↗

  4. SonicCD-DC

    ActiveSource port

    A port of Sonic CD/RSDKv3 for SEGA Dreamcast

    ★ 16Last change Sep 16, 2026

    GitHub ↗

  5. scddisasm

    ActiveDisassemblyBase project

    ★ 21Last change Jul 28, 2025

    GitHub ↗

  6. scdpc_disasm

    InactiveDisassemblyBase project

    Sonic CD PC Disassembly

    ★ 21Last change May 28, 2012

    GitHub ↗

We link to each project's own page and host no game files. Version data from project pages, our daily checks and awesome-decomp-games (CC0).

Short answer

Sonic CD’s 2011 remaster and its Retro Engine v3 have been fully decompiled by RSDKModding. The decompilation runs natively on Windows, macOS, Linux and Android with a pixel-perfect display, remappable controls and features from the mobile versions. It needs assets from an official release you own. Latest release: 1.3.3, 2 November 2025.

This site is not affiliated with RSDKModding, Christian Whitehead or Sega. We do not host any files and only link the project’s official pages.

What it is

Sonic CD came out for the Sega CD in 1993. In 2011 Christian Whitehead remade it on his Retro Engine for consoles, PC and phones; that version later went into Sonic Origins.

RSDKv3-Decompilation is “a complete decompilation of Retro Engine v3” with the 2011 Sonic CD. Like the group’s Sonic 1 & 2 and Sonic Mania decompilations, it opens with “SUPPORT THE OFFICIAL RELEASE OF SONIC CD”.

Current status

  • Status: Working and complete; last updated on 26 October 2026.
  • Latest release: 1.3.3, 2 November 2025, for Windows (x64 and x86), macOS, Linux and Android.

What you need

  • Assets from an official Sonic CD release you own: the Steam version (original or Sonic Origins), Sonic Origins on Epic or Switch, or the iOS and Android versions (delisted, but re-downloadable from your purchase history). The README says you must buy or officially download it for the assets, even on unsupported platforms.
  • A Windows, Mac, Linux or Android device.

We do not link any copies of the game data.

Advantages over the official PC version

From the README:

  • a sharp, pixel-perfect display;
  • controls fully remappable in settings.ini;
  • a window that works with Windows shortcuts;
  • mobile and updated scripts, so features the official PC version never got are playable.

How setup works (overview)

  1. Download a build from the releases page.
  2. Copy the data file from your official Sonic CD installation into the decompilation’s folder, as the README explains.
  3. Start the game and adjust settings.ini if you want different controls or display options.

FAQ

What is the Sonic CD decompilation?

A complete decompilation of Retro Engine v3, the engine Christian Whitehead built for the 2011 Sonic CD remaster, by RSDKModding. It runs the game natively on Windows, macOS, Linux and Android with improvements over the official PC version.

Does it include Sonic CD?

No. The README says it will not run without assets from an official release, such as the Steam version (original or in Sonic Origins), the Epic or Switch Sonic Origins, or the delisted mobile versions you downloaded before.

How is it better than the PC version of Sonic CD?

The README lists a sharp, pixel-perfect display, fully remappable controls through settings.ini, a window that works with Windows shortcuts, and support for the mobile and updated scripts, so features the official PC version never got can be played.

Is this the same as Sonic Origins?

No. Sonic Origins is Sega's official collection. The decompilation uses assets from it or other official releases, but runs on the community's rebuilt Retro Engine.

Unofficial. This page is written by an independent directory. It is not made by, endorsed by or affiliated with Sega (2011 remaster by Christian Whitehead) or RSDKModding (Sonic CD (2011) decompilation, RSDKv3's author). We do not host any files, and we never link to game files, ROMs or ISOs.

Sources

This page was last updated on Nov 3, 2026. A date after a source is the day we read it. Versions and steps follow the official project; if they differ, the official source wins.

More ports

See every native PC version of a console game in our recompiled games list, browse all PC ports of console games, or go back to the full list of ported games.