Can the Retroid Pocket Duo play PS1 games?
Almost certainly, though no reviewer has shown it on a Duo yet.
PS1 needs much less power than the PS2 and GameCube games reviewers run well on the Duo, so it is the safest system on this list. WULFF DEN suggests RetroArch for systems older than GameCube.
DuckStation's Android page says the app needs a PS1 BIOS file to start games, and that its developer offers no support for the Android version.
Relevant tools
Drivers are listed when a Duo review used them for this system.
PlayStation emulator. Check its official downloads page for Android builds.
Preview · previewNo matching tools. Try a system name, such as DS or 3DS.