This is where the UI cheats Sims 4 comes into play. However, the use of the Sims 4 UI extension mod is fairly limited. With the use of the UI Extension Mod, you can easily change the game’s UI all by yourself. However, this enhanced user interaction can only come with the addition of the Sims 4 UI Extension Mod. The UI or User-Interface in the game adds in a sense of convenience to the play. The Sims 4 game is a completely open-source platform that is loved and adored by many.