Emulation via CitraCitra is the gold standard for 3DS emulation. It allows you to play games on PC, Mac, and Android. The biggest advantage of emulation is the ability to "upscale" graphics. While the original 3DS hardware runs at a low 240p resolution, Citra can push these games to 4K, making them look like modern HD remasters.
Here’s a structured write-up looking at the full scope of — from their technical format and library highlights to the legal and preservation landscape. all 3ds roms