I realised I never shared this with HN! My first proper Pico-8 project was a minimalistic arrival air controller game, where instead of vectoring planes you assign them to routes.

Early versions of the game were extremely challenging and lasted only a few minutes, but play testers thought a more chill experience would fit the game better, so while the game does ramp up its difficulty, most people should have no problem going for at least half an hour.