Often labeled with the product code CTR-P-AMKE .
If you install an out-of-region Legit CIA on a standard console, it typically will not show up on the Home Menu unless you use a region-free launcher or have CFW enabled. Mario Kart 7 3DS Legit CIA (EUR/USA)
Because the 3DS is region-locked, you must match the CIA file to your console's region for it to appear on the Home Menu naturally. Often labeled with the product code CTR-P-AMKE