Not a game necessarily, but I decided two days ago to make my own mod launcher for Doom (specifically, GZDoom). I got fed up with the ones that currently exist that lack features I want (not to mention being really old).
UI and theming are definitely not finished, but I'm really happy with how it's shaping up. Made in Godot, as is usual for me.
This is awesome! Wish I could run something like this on my car's tablet, then we could go full circle.