Assuming you have legally obtained your own .wad file (by dumping it from a Wii that had the game installed), here’s the step-by-step:
What’s your toughest Robot Master? (Mine is Galaxy Man —those black holes are cheap!) Drop a comment below.
If your Wii’s internal memory crashes, or you buy a used Wii without the game, there is to obtain Mega Man 9 for Wii anymore. This is where the concept of “abandonware” enters the conversation. While the game is still sold on other platforms (PlayStation 4, Xbox One, Nintendo Switch via Mega Man Legacy Collection 2 ), the specific Wii version —with its unique save data sharing, Wii Remote controls, and leaderboards—is no longer commercially available.
If you have a soft-modded Wii and you legally own the game from the WiiWare era (or have dumped your own copy), you can convert it to a playable WAD file. , but the toolchain involves: