Something I never thought I'd see. suitntie22 has created a Star Fox turn-based RPG for the original Game Boy. In Star Fox: Grounded, you take control of Falco as he tries to find his teammates and repair his Arwing after the Star Fox team get separated and grounded on a hostile planet full of robots. The game is a turn-based RPG, with random battle encounters, dialog, and an overworld.
And when I say it's a Game Boy game, I mean it. The game was designed to run with the exact limitations and resources of an original Nintendo Game Boy. You can download the game and play it on any Game Boy emulator you choose.
Kadath brought this fangame to my attention, and since then, Takumi of the KA server tried it out. He said it was relatively short, demo-like, and needed some polish, but overall had a lot of potential. Download Star Fox: Grounded at itch.io.