Finding the Game ID on a Nintendo 3DS Cartridge or eShop

A 3DS Game ID is a 12-character alphanumeric code (e.g., CTR-P-APFE for Mario Kart 7 EUR) uniquely identifying a specific game release (region, revision).

Where to Find It

1. Game Cartridge (Physical): White sticker on the back label. Format: CTR-P-XXXX (CTR = 3DS, P = Publisher/Product, XXXX = unique code + region).
2. eShop (Digital):
   • On 3DS: eShop → Menu (top left) → Settings/Other → Your Downloads → Tap game → Details. Shows “Product Code” (Game ID).
   • On PC: Nintendo Game Store → Search game → URL contains ID (e.g., 70010000000123 — different format, 14-digit Title ID).
3. System Settings (Installed Games): System Settings > Data Management > Nintendo 3DS > Software → Select title. May show Title ID (8-char hex, e.g., 0004000000055E00).
4. Save Data Tools (Homebrew): Checkpoint, JKSM, SaveDataFiler display Title ID and Game ID for installed titles.
5. Online Databases: 3dsdb.com, GBATemp Title ID List — search by game name.

Why You Need It

• Downloading correct update CIA/DLC.
• Save editing (Checkpoint, PKHeX).
• Region-free patching (Luma3DS locale emulation).
• Filing bug reports / seed requests.

Note: “Game ID” (CTR-P-XXXX) ≠ “Title ID” (00040000XXXXXXXX). Both are used in different contexts.