Can the Retroid Pocket Duo play Wii games?
Probably, but no reviewer has tested a Wii game on a Duo yet.
Dolphin covers both GameCube and Wii, and GameCube games run well on the Duo at 2× (see the GameCube answer). The two consoles are close in power, so that is a fair guide to speed.
Many Wii games expect pointing and motion. The Duo has no Wii Remote, so those games need the controls remapped, and some may not play well that way.
Relevant tools
Drivers are listed when a Duo review used them for this system.
GameCube and Wii emulator with Android and desktop builds.
See project for releasesNo matching tools. Try a system name, such as DS or 3DS.