You can also customize a Sim’s voice, gender, physical frame, pregnancy abilities, toilet standing, and clothing preference. It is where you can customize a Sim’s appearance and personality. In The Sims 4, Create a Sim is reinvented to make it easy to use than its predecessors in TS2 and TS3. It is responsible for creating individual Sims before you add it to the game. But first, what is a CAS? And what does it do in the game? Create a Sim ExplainedĬreate a Sim, or also known as CAS, is an essential part of The Sims 4 or any game in The Sims franchise. This article focuses mainly on getting more columns for The Sims 4’s CAS or Create a Sim mode.