Lego Batman 3 3ds Codes Not Working

If you are certain you have a 3DS-specific code but it still isn't working, check these common pitfalls: 1. Regional Lockouts

On the 3DS, you cannot enter codes until you have completed the first level of the game (the prologue on Oa, where Hal Jordan and Batman fight Sinestro). After finishing that level and reaching the Watchtower or Hall of Justice hub, follow these steps: lego batman 3 3ds codes not working