: Mario's main ally is Cappy. By throwing Cappy at enemies or objects, you can "capture" them to use their unique abilities, such as flying as a Bullet Bill or swimming as a Cheep Cheep.
To access the contents of the archive, you will need an extraction tool like WinRAR or 7-Zip .
: You should see files such as a game ROM (e.g., .nsp or .xci for Switch) or specific mod files if it is a fan project like "Super Mario Odyssey 64".