melonDS is a PC tool that lets you emulate video games from portable Nintendo consoles: Nintendo DS, DSi, and 3DS. This emulator stands out because of its simplicity, thanks to its direct interface and how smooth it makes playing true legends from the world of video games.
You’ll need the BIOS and firmware of your Nintendo console to use this tool. Once it’s ready, you’ll just have to sit back and enjoy the backups of your favorite games.
The goal of melonDS is to achieve the best emulation possible without losing any of the benefits of a program with these characteristics. This means that you can enjoy the online options of portable Nintendo systems: local multiplayer via WiFi, as well as online connectivity.
melonDS is a highly appealing app to enjoy your Nintendo DS and 3DS games from the comfort of your PC. This app has consistent updates thanks to the creator’s efforts.
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according to the information it works for ds and 3ds but it doesn't even emulate a .3ds rom that I have