I have morrowind for xbox and its pretty good. There are alot of different paths you can go in the game. You can put the main mission off as long as you need. To go through all the different paths of the game will take quite sometime. I did however get bored with the game after awhile, some objects are very small and hard to find even when at the location they are at. Very difficult game to excel at without using a guide of some kind fortunately there is a free one on the net that helps as little or much as you need.
http://www.uhs-hints.com/uhsweb/morrownd.php
gives good information to about the game