If you're looking to play Sonic Mania on your Wii, there are a few creative (albeit unofficial) solutions:

created a port based on the RSDKv5 decompilation (the engine the game runs on). Wii Performance

If you want an authentic Sonic experience on the Wii without dealing with experimental decompilation ports, you have several excellent, official options available through emulation and past releases:

This article serves for informational and educational purposes, highlighting the intersection of game preservation, fan development, and legal ownership. Need Help Setting Up Homebrew?

Create a folder named SonicMania inside the apps directory on your Wii’s SD card.

Place the Sonic Mania folder inside the apps folder on your Wii's SD card (e.g., SD:/apps/SonicMania/ ).

The open-source Wii RSDKv5 executable file (available on trusted developer platforms like GitHub). Why Avoid Random Download Links

Sonic Mania is available on multiple platforms, including:

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Furthermore, Sonic Mania is not a game that runs on an emulator like SNES9x or FCEUGX. It was built using the Retro Engine (RSDKv5) by Christian Whitehead. Therefore, you cannot simply download a .iso or .wbfs file, put it on a USB loader, and play it like a standard Wii game.