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

Sonic Mania decompilation (RSDKv5)

A complete decompilation of Sonic Mania (2017) on the RSDKv5 engine, with a built-in mod loader and support for most released versions. Runs on Windows and Linux with assets from your own copy.

WorkingDecompilationNeeds your own copyv1.1.1Updated

You need your own copy of Sonic Mania. 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 Sonic Mania (Plus) release you own: Steam, Epic, Switch, PS4 or Xbox One (the Netflix Games version is not supported). Plus a Windows or Linux PC, or a system you can build for.

Official releases ↗GitHub repository ↗

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

Every version of Sonic Mania 4

  1. Sonic Mania decompilation (RSDKv5)This page

    WorkingDecompilation

    Full source rebuild of Mania and its Retro Engine v5. Uses data from an official release (PC, Switch, PS4, Xbox One). Adds a built-in mod loader and builds for systems the game never shipped on.

    Runs on Windows (x64 and x86), Linux, Other systems (build from source)Needs files from a copy you own★ 8281.1.1 · Nov 1, 2025

    GitHub ↗

  2. RSDKv5-Decompilation

    ActiveDecompilation

    A complete decompilation of Retro Engine (v5)

    ★ 574v1.1.1 · Nov 1, 2025

    GitHub ↗

  3. Sonic-Mania-25MB

    ActiveDecompilation

    RSDKv5 and Sonic Mania decompilation with added VP9 video and OPUS audio capabilities to make the game 25MB

    ★ 13Last change Aug 23, 2026

    GitHub ↗

  4. Sonic-Mania-Decompilation

    ActiveDecompilation

    PS3-PORT

    ★ 1199.99 · Jun 23, 2025

    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 Mania (2017) has been completely decompiled by RSDKModding, together with its Retro Engine v5. The decompilation runs natively on Windows and Linux (and builds for other systems) with a built-in mod loader. It needs assets from an official release you own (Steam, Epic or consoles; not the Netflix version). Latest release: 1.1.1, 1 November 2025.

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

What it is

Sonic Mania came out in 2017 for PC, Switch, PS4 and Xbox One, followed by Sonic Mania Plus in 2018. It runs on Christian Whitehead’s Retro Engine (RSDK) version 5.

Sonic-Mania-Decompilation is “a complete decompilation of Sonic Mania (2017)” by the RSDKModding group, who also decompiled the engine itself (RSDKv5-Decompilation) and the 2013 Sonic 1 & 2 remasters. The README opens with a plea: “SUPPORT THE OFFICIAL RELEASE OF SONIC MANIA (PLUS)”, and states that the project is not to be used for piracy.

Current status

  • Status: Working and complete; the repository was last updated on 20 October 2026.
  • Latest release: 1.1.1, 1 November 2025, for Windows (x64 and x86) and Linux.
  • Other systems: build from source with CMake.

What you need

  • Assets from an official Sonic Mania (Plus) you own: Steam, the Epic Games Store, Switch, PS4 or Xbox One. The README stresses that even if your platform has no official release, “you must buy it for the assets”. The Netflix Games version is not supported.
  • A Windows or Linux PC, or another system you can build for.

We do not link any copies of the game data.

What it adds

From the README:

  • A built-in mod loader and API for smoother modding.
  • Support for targeting RSDKv5U instead of standalone RSDKv5.
  • Builds of almost every released version: 1.00, 1.03 and 1.06 (the Plus update).
  • Save transfer: copy your official PC save data into the decompilation’s folder.

How setup works (overview)

  1. Download a build from the releases page, or build it yourself (clone recursively; the GitHub ZIP lacks the needed submodules).
  2. Copy the data file from your official Sonic Mania installation into the decompilation’s folder.
  3. Optionally copy your save data across, then start the game.

FAQ

What is the Sonic Mania decompilation?

A complete decompilation of Sonic Mania (2017) and its Retro Engine v5 by RSDKModding. It rebuilds the game as source code you can compile natively for many systems, with a built-in mod loader.

Does the Sonic Mania decompilation include the game?

No. The README says it will not run without assets from an official release of Sonic Mania or Sonic Mania Plus, from Steam, Epic, Switch, PS4 or Xbox One. The Netflix Games version is not supported.

Can I use my existing Sonic Mania saves?

Yes. The README says you can copy your save data from the official PC versions into the decompilation's folder.

Which Sonic Mania versions can it build?

Almost all released versions, including 1.00 (the original console release), 1.03 (the original PC release) and 1.06 (the Plus update), and it can target the RSDKv5U engine.

Unofficial. This page is written by an independent directory. It is not made by, endorsed by or affiliated with Sega (developed by Christian Whitehead, Headcannon and PagodaWest Games) or RSDKModding (Sonic Mania decompilation (RSDKv5)'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.