I’ve installed Emudeck on my device, the process was really easy to follow, here’s a guide.
I just made this post to share info and suggestions on the best games to try. Right now I’m playing a (totally owned) rom of Zelda breath of the wild and so far is flawless (although stuck to 30 fps x some reason). Any suggestion for other good game??
You got it a bit confused! Flatpak is not a way to store roms, but a way to deliver the software (RetroDeck) onto your device. Retrodeck, once installed, will create a “retrodeck” folder in your steam deck filesystem, which will again contain folders for roms.
All you need to do at that point is to place rom files inside already existing folders for their own systems (psx, psp, etc). Those files can be of many filetypes. For example, psx roms can be in chd, cue/bin, iso, etc
It is as straightforward as it can get!