RetroPie doesn't include a 3DS emulators, so creating a special folder for 3DS games will not be enough. If you want to add a new system/emulator to RetroPie, see https://retropie.org.uk/docs/Add-a-New-System-in-EmulationStation/.

As for downloading games - see Rule #1 of the forum.

@Gnatrgaming

Drastic doesn't work in Pi5. I suggest using lr-melonds from the RetroPie-Extra project, it is the best Ds emulator:

https://github.com/Exarkuniv/RetroPie-Extra

@sleve_mcdichael Thank you, somehow the link between making a custom system and linking libetro cores didn't occur to me.

@barbudreadmon

Ah shame thanks for the advice it spares me spending lots of time trying to build it on RPi. :)

Sorry for providing hints into wrong direction. I must admit I did not follow the portable devices section of Nintendo HW well.

OK so should anyone encounter the same:
Changing from opengl to sdl2 did resolve that last issue.
A Pentium G3258 at 3.2 Ghz has some speed issues, but it works fine with 4.6 and up.
Skylake or newer Processors should do with less frequency.

@HoochShepherd https://retropie.org.uk/forum/topic/21248/citra-core-x86-builds/3 - I believe like dolphin it's x86 only for now

@hackedmacbook111 This is a RetroPie forum, not a macOS forum. Besides, RetroPie is not responsible for developing the emulators, it just packages and configures existing emulators. If you want to run emulators on your macOS, then use the macOS versions of those emulators.

Still though, would have been nice for Citra to benefit from USB ROM transfer and stuff.

no$gba or something similar had 3ds support on windows, and it works suprisingly well with the mouse as how to access the touchscreen, im sure similar on pi4 would be easily possible from a tech point of view, but from a power point of view im not sure.

@massproduce201 you need to install the retroarch cia from their downloads page. You might even have to copy the retroarch directory structure to the root of your sd card. Not really a retropie question though, so I'd direct you to the libretro forums. They'll have the info you need.

Edit: read this
https://gbatemp.net/threads/retroarch-emulation-thread-nightly-builds-included.400913/

Pretty cool! I love the 3DS UI.
I think you should separate the objects that i've marked on another layer and use a zindex higher than the carousel, that will prevent it to fade and you can use another transition styles to create new effects, like i did on swineapple and stranger stuff.
0_1539436567970_test.jpg

@dodoremi10010 you may want to look at the ODROID Xu4, it just recently got a full version of Retropie and so far in tests it can play a lot of the Dreamweaver, N64 and PSP games that you never could on a RPi

@TheCatMan2000

You might look into this as a possibility.