I can only run Morrowind properly on my
old crock of beloved computer; it's actually one of the few games that holds my attention enough for me to play very often. (Actually, this thread reminds me that I haven't for ages!) I made it rather cumbersome though by adding too many mods, taking some off, cleaning up the saved games, forgetting which one I did what too, blech. I'm sure a lot of people have done this, but now I have to decide which saved game I want to play before I start, and open various things up and fiddle around to be reasonably sure it's actually going to start.
It's a good game though: I like the unique graphics and style, I did like the sound before I got sick of the repetition after a while and replaced most of the music and some sound files with various homebrewed concoctions

, the dialogue and storylines are very atmospheric if you could get past the obviously generic repetitions and certain slightly unrealistic features... I also happen to like the free-roaming design that lets you go where you want, roleplay away endlessly and completely ignore the main quest if you like (which is generally what I did, just to spite the stupid designers for tacking it on as a clumsy afterthought to all the actually good bits). I don't really like a game that has very linear missions and tells you what to do every step of the way because it breaks immersiveness, and limits your imaginative possibilities to what the designers happened to think of, which is often something exceedingly stupid...
But the best thing about it is of course the mods: people were still making them last time I checked, and I've done a few for my own use, though not complicated ones as I really can't be asked. This must be one of the most mod-able and modifed games in history. Someone, somewhere, has thought of just about every possible feature you could want in the game, and a whole load more you probably never thought of in your wildest dreams, and so it's almost impossible to run out of playing time or new things to do, providing you don't simply get sick of the game itself. Which is probably good for you when you have other things to do in your life

Hmmm, it's months since I played it actually...