Physical Discs: Region Locked. Xbox 360 enforces region coding (NTSC-U/C vs PAL). A European (PAL) disc **will not boot** on a North American (NTSC-U/C) console. Error: "Disc Unreadable" or "Region Mismatch."
Recommendation: Buy the digital version on your region's store, or play via Xenia on PC. Hardware mods are obsolete for most users.