For instance, it can allow for Sims 3 teens to get pregnant, let same sex couples have a baby, take away that annoying nude blur, and download new Sims and clothes for free! How to Mod Your Sims With mods players can change things in game and let their characters do things they couldn’t before. However, for some Sim players, that is just not enough Sims 3 customization, and they like to mod things up by downloads found on the Internet. “The Sims 3” is a simulation game that allows players to customize their Sim, home, clothes, cars, and more.