A good strategy, sometimes quite complex. It's interesting to learn from your mistakes and try to make your own impenetrable prison. This can be done in many ways, hire a bunch of officers, put cameras everywhere and build huge walls, or create conditions in which prisoners will not be eager to leave the prison - the choice is yours
Simple and stylized graphics, in my opinion, are excellent choice for such games. Prisoners have many ways to escape, from a hidden single tunnel to a mass riot. So there is no time to look at the graphics