ESRB Changes Oblivion's Rating to M announces a change in the ESRB rating for The Elder Scrolls IV: Oblivion to "M" for mature, the game had previously been rated "T" (teen). Word is: "The content causing the ESRB to change the rating involves more detailed depictions of blood and gore than were considered in the original rating, as well as the presence of a locked-out art file or 'skin' that, if accessed through a third party modification to the PC version of the game, allows the user to play with topless versions of female characters."