Playing Game Boy Games on 3DS: Requires Flashcart or CFW

The 3DS cannot natively play Game Boy cartridges (no cartridge slot). To play GB/GBC/GBA games:

Flashcart Method (DS Mode)

1. Buy a DS-mode flashcart (R4i Gold 3DS+, Ace3DS X, R4i-SDHC).
2. Load GB/GBC ROMs via Goomba Color emulator or GBA ROMs natively.
3. Insert into 3DS → Launch from home menu.

Native 3DS Options (Better)

• Virtual Console (eShop closed 2023): Purchased titles still redownloadable.
• Open_AGB_Firm (Custom Firmware) – Native GBA injection, perfect accuracy.
• GBARunner2 (Homebrew) – GBA emulation on 3DS via TWL mode.

Legal: Only use ROMs you own. Flashcarts void warranty (irrelevant now). CFW requires 3ds.hacks.guide.