Complex sentence: Mod The Sims 2 (or MTS2, as it's known) is a free "The Sims 2" fansite offering a wide variety of custom content to download, along with an extensive help and tutorial section.
Split into simpler sentences: Mod The Sims 2 (MTS2) is a free "The Sims 2" fansite. It offering a wide variety of custom content to download, along with a help and tutorial section.