I've always liked the idea of making a game, so one day I played around with boids being a single player game where you set up the parametres beforehand and see how it unfolds. It became quite a complete MVP, with the ability to define levels and the ability to win/loose.
Takeaway from project: It's fun to make little games. Ideas develop over time, I had played around with boids a lot before trying to make a game out of it.