The Elder Scrolls IV: Oblivion and The Elder Scrolls V: Skyrim are available on three platforms: PC, Xbox 360, and PlayStation3. The Elder Scrolls III: Morrowind appeared on PC and the original Xbox. In terms of actual gameplay content, the three platforms perform mostly the same. The PlayStation 3 version has the The Elder Scrolls IV: Knights of the Nine official plug-in included at start, which PC and Xbox 360 users have to buy separately. There are several other differences: