If you're looking for a ROM (Read-Only Memory) version of the game, I should note that downloading ROMs of copyrighted games without owning the game or having permission from the copyright holder may be considered piracy.
It sounds like you're looking for a ROM that works on the Wii . sonic mania wii rom
and Sonic and the Black Knight : Exclusive "Storybook" series titles. If you're looking for a ROM (Read-Only Memory)
: The port is highly optimized and runs at a smooth frame rate, supporting original Wii controllers and GameCube controllers. Requirements : To run this version, you typically need a Homebrew-enabled Wii and the original sonic mania wii rom
: Developers improved frame rates by disabling unnecessary debug logging and optimizing buffer clearing, which previously slowed the game down. Native Controller Compatibility