After twenty minutes of digital archaeology, he found it. A post on a niche modding community site, dated just last week. The user 'EndouFan01' had re-uploaded a patched version of the Xtreme ISO. The description read: "Works on Dolphin Emulator and Homebrew Wii. English patched menus. All players unlocked."

Standard game saves are not compatible . You must start a new save or download a completed "xtreme.sav" from the official site. Platform Compatibility