This article is for educational purposes. Do not download BIOS files from the internet; dump them from your own legally owned Nintendo DS hardware. The author does not condone piracy.
MelonDS supports both local and online play: nandbin melonds top
This comprehensive guide covers everything from obtaining your nand.bin file to configuring it properly within the melonDS Emulator . What is a nand.bin File and Why Do You Need It? This article is for educational purposes