Repacks can sometimes be corrupted. Use a tool like HashCheck to verify the file against known good hashes. A clean USA Repack ISO has the MD5: a1b2c3d4e5f67890... (Verify with Redump.org database if possible).
The game is essentially a 3D racing platformer where Sonic runs forward automatically. You hold the Wii Remote horizontally, tilting it left and right to steer. The Skill System: sonic and the secret rings wii iso usa repack