Sonic 2 Decompilation Guide

Guide Author: MewLew

Requirements

• Game data.rsdk file - You must own a copy of Sonic to obtain the required data files.

Obtaining the data.rsdk File

PC

1. Navigate to your Sonic the Hedgehog 2 game installation folder.
2. Locate the data.rsdk file within the directory.

Android

1. Install an APK extractor app on your device.
2. Use the app to extract your installed Sonic the Hedgehog 2 Classic APK.
3. Download and install ZArchiver.
4. Open ZArchiver and locate the extracted Sonic APK.
5. Select the APK file and choose the Extract Here option.
6. Navigate to the extracted assets folder and find the data.rsdk.xmf file.
7. Rename the file to data.rsdk by removing the .xmf extension.
8. Your data.rsdk file is now ready to use.

Important: The Sonic Origins and Origins Plus Sonic2u.rsdk file is not compatible with this port.

Internal Setup

1. Launch Sonic the Hedgehog 2 to initialize the folders.
   • The app will force close.
2. Upload the data.rsdk file:
   • Open the Dev Portal.
   • Go to File Explorer > Local App Data > Sonic the Hedgehog 2.
   • Navigate to the Local State folder.
     • Click Choose File, locate your data.rsdk file, and Upload.
3. Launch Sonic the Hedgehog 2 and you’re ready to play.

Additional Notes

• You can upload save files (Sdata.bin) to the same directory as the data.rsdk file. You can upload save files (Sdata.bin) to the same directory as the data.rsdk file.
• If button inputs are not working when the game starts, quit and restart the game.
  • Press the Xbox button, hover over Sonic the Hedgehog 2, press Start, and choose Quit.