| Oscuro\'s Oblivion Overhaul, also known as OOO or O3, is a popular gameplay, content additive, plug-in for The Elder Scrolls IV: Oblivion. Oscuro\'s Oblivion Overhaul was designed to enhance the immersion, variety, realism and difficulty of TES IV: Oblivion through extensive changes to its gameplay structures and aided by the addition of high-quality content. |