Duet Dash
Duet Dash is an older game, and a fond one. Two dots share a single orbit, locked opposite each other, and you spin the ring with the mouse. Obstacles fall in from every side, and you rotate so both dots slip through the gaps at once. One control keeping two things alive.
It is a remake of a phone game I loved, built in Godot over about a month. It was where I first learned to ship a whole loop, menu to game over and back again. I mean to come back to it.