The Elder Scrolls IV: Oblivion

Notes:

storyline, a large dungeon, 17 new magic items, 12 new books, notes, and journals). It is available for free until 31st December 2006 and not available in all regions, only: Canada, United States, Belgium, Denmark, Spain, Finland, Great Britain, Ireland, Netherlands, Norway, Sweden, Hong Kong, Korea, Singapore, Taiwan, Australia and New Zealand.