Heres a port of a decent looking Jet Set Willy type game for the Nintendo 3DS, heres the release notes:

Locomalito‘s game L’Abbaye des Morts has been ported to the Nintendo 3DS by JeffRuLz! It’s written in C using the libctru and citro3d libraries. The gameplay is directly inspired by Manic Miner and Jet Set Willy. This port seems to run fullspeed!
Story:
In the 13th century, the Cathars, who preach about good Christian beliefs, were being expelled by the Catholic Church out of the Languedoc region in France. One of them, called Jean Raymond, found an old church in which to hide, not knowing that beneath its ruins lay buried an ancient evil.

via https://pdroms.de/nintendo-3ds/labba...-3ds-game-port