My favourite for this concept is Luck be a Landlord. It takes 5 seconds to open, each action takes like 5 seconds, and can be dropped at any second completely save. It’s a rogue-like deck builder in the interface of a slot machine.
It’s not only fun, but is super non committal, I’ve had friends say “brb” and I open the game for 30 seconds to play and get off. With that said I’ve also been absorbed into the game and spent entire days glued, it’s a great time.