I once read, regarding story length in any medium, that your tale should not be too long or just the right length, but ideally too short - keeping the story churning in the mind of the player. Brothers: A Tale of Two Sons does exactly this. I wanted to learn more about several areas you journey through; the game shows a lot but tells very little, leading you to imagine your own lore. One of the most delightful and beautiful games I've played in a while.