Sonic the Hedgehog 2 · Retro Engine (PC / mobile)
Sonic 2 Android Port
RSDKv4 Decompilation runs the 2013 Retro Engine remaster of Sonic 2 on Android and desktop systems. It reconstructs the engine and menus rather than recompiling a Genesis binary. Release 1.3.3 includes an Android package, but the game still needs remaster assets from a legally obtained copy.
How to build it
- Obtain the Sonic 2 remaster datapack from your own official release, following the asset guide linked in the repository README. A Genesis ROM will not work.
- Download v4-android.zip from the official RSDKv4-Decompilation 1.3.3 release and follow the project's Android installation instructions.
- Supply the matching game data. For a source build, follow dependencies/android/README.md with Android Studio and the NDK.
Game version you need
- Legally obtained Sonic 2 2013 Retro Engine remaster assets, or compatible Origins datapacks; Genesis/Mega Drive ROMs are not inputs.
Hardware & system
- Android release package v4-android.zip; supply the matching game datapack
- Android Studio/NDK and documented dependencies for optional source builds
Versions, platforms & known issues
| Project | Type | Release | Status | Runs on | Game version | Last update |
|---|---|---|---|---|---|---|
| RSDKv4 DecompilationComplete Retro Engine v4 and Sonic 2 (2013) menu decompilation. Release 1.3.3 (2025-11-02) includes v4-android.zip; fixes mobile inputs and Origins datapack crashes. | Source port | 1.3.3 | Playable | Windows, Linux, AndroidAndroid release package v4-android.zip; supply the matching game datapack · Android Studio/NDK and documented dependencies for optional source builds | Legally obtained Sonic 2 2013 Retro Engine remaster assets, or compatible Origins datapacks | Sep 6, 2026 |
Known issues & caveats
- Release notes warn of ultrawide issues without decompiled scripts. Release builds lock Origins Plus DLC content.
Related links
About the game
One of the best selling SEGA games of all time - Sonic The Hedgehog 2 is now available for free on mobile! Rediscover SEGA’s super Sonic masterpiece! Dr. Eggman is back to his old tricks, trying to find the seven Chaos Emeralds that will enable him to complete his ultimate weapon, the Death Egg. Only the triple threat of Sonic, Tails, and Knuckles can defeat him in this remaster from the team behind Sonic Mania! Sonic The Hedgehog 2 joins the ever-increasing line-up of ‘SEGA Forever’, a treasure trove of free SEGA console classics brought to life on mobile for the first time.
- Original platform
- Android, iOS, Windows Phone (2013 remaster)
- First released
- Dec 12, 2013
- Developer
- Headcannon
- Series
- Sonic The Hedgehog
- Genre
- Platform, Arcade
- Themes
- Action
- Modes
- Single player, Multiplayer, Co-operative
- Perspective
- Side view
Story (via IGDB, in English)
Doctor Robotnik seeks the Chaos Emeralds to power his space station, the Death Egg, and has trapped the animal inhabitants of West Side Island inside aggressive robots. Sonic the Hedgehog, joined by his new companion Miles "Tails" Prower, embarks on a journey to collect the Chaos Emeralds and stop Robotnik before his plans come to fruition.
Artwork
Screenshots
Game details, cover art and screenshots from IGDB via LizardByte GameDB, retrieved Oct 27, 2026. Images are © their respective owners.
About this project
The official README describes a complete decompilation of Retro Engine v4 and the Sonic 1 and 2 (2013) menus. Sonic 2 uses its own assets even though both games share this repository and Android release package. These rows therefore count as two games and one project repository.
Release 1.3.3, published November 2, 2025, fixes inputs with mobile datapacks, crashes with Origins data and several gameplay/menu issues. This is published release evidence, not a claim of independent Android device testing. The removed screen-width limit can expose ultrawide issues without decompiled scripts.
Use supported mobile or Origins data as the README explains. Origins Plus DLC is locked in release builds; the project documents source builds for enabling it. No Genesis or Mega Drive executable is translated by this port.
FAQ
Can I use a Genesis ROM?
No. This project needs the 2013 Retro Engine remaster assets or supported Origins datapacks, not the original console ROM.
Is there an Android download?
Yes. The official 1.3.3 release includes v4-android.zip. It is an engine package and still needs your own game data.
Does Recompedia provide the game or its assets?
No. Recompedia does not host or link to game assets. Supply the required data from a legally obtained copy of the game; the project download does not replace that copy.
Recompedia does not host or link to ROMs, BIOS files or game assets. Every project listed requires a copy of the original game owned by the player. Status checked against the project's own repository on Oct 26, 2026.