Elder Scrolls IV: Oblivion

This game should be renamed Elder Scrolls 4: OBSESSION! If you weren't an achievement whore before, you will be with this game!

Over 120 hours logged for me, and it's still amazes me to this day!

390 hours logged... still playing... utterly epic... Period.

Awesome game. Didn't finish... I ran out of time to do so. I definitely plan on doing so someday. Buy the strategy guide for this one! :)