It's an overwhelming world and one which many Simmers soon find addictive. Maxis Match, or MM as it is known, comprises items designed to enhance the game, while still reflecting Maxis' game aesthetic. For those who want to add a little extra, without having content that stands out, then Maxis Match choices are the way to go. When playing The Sims 4, adding custom content, usually referred to as CC, is one way in which players are enhancing their games.