“Most games have small solution landscapes, so there’s one possible solution and one way to solve it. Other games, the games that tend to be more creative, have a much larger solution space, so you can potentially solve this problem in a way that nobody else has. If you’re building a solution, how large that solution space is gives the player a much stronger feeling of empathy. If they know that what they’ve done is unique to them, they tend to care for it a lot more.” – Will Wright, Sims, BattleBots, Cellular Automata God and Go: A Conversation with Will Wright by Celia Pearce