By abiding by the restrictions of the challenge and reaching for the goals of the challenge, you will find yourself getting a very different experience from The Sims 4 that you might have playing casually. “The Legacy Challenge is a set of self-imposed rules meant to change the way you play the game of The Sims 4. When we talk about what a legacy challenge is we may as well go straight to the source for what it is, the official description of a legacy challenge from the original creator, Pinstar, says the following: