The Legacy Challenge is a set of self-imposed rules meant to change the way you play the game of The Sims 4. The Sims 4 Legacy Challenge Rules (updated March 12, 2019) Sims 2 Apocalypse Challenge Rules – Updated for the Seasons Expansion.Sims 2 Apocalypse Challenge Rules – Updated for the Pets Expansion.Sims 2 Apocalypse Challenge Rules – Core.Sim of the Month Challenge Rules (Sims 3).Sim of the Month Challenge – November 2018 – Bryce Shy.Sim of the Month Challenge – December 2018 – How the Simch Stole Winterfest.Sim of the Month Challenge General Rules (Sims 4).Movin’ On Up Challenge – Apartment List.Sims 2 Legacy Challenge Rules – Advanced.NerdyBunny’s Printable Legacy Rules & Scoresheet Book.