The build helper script will usually handle this for you. If you're doing it manually, you need to recursively clone the main repository. Using the command line:

: The decomp includes a built-in mod loader . This enables features like custom characters (such as Amy Rose) and new level layouts that are not available in official versions.

Sonic Mania Plus Android Decomp refers to a community-led project to reverse-engineer the Retro Engine v5 (RSDKv5) , allowing Sonic Mania Plus to run natively on Android devices