For this topic I was interested in seeing which games, no matter how strained your pc's space may be, you won't uninstall from your computer, and on the flip side, the game that spent the shorts amount of life on your PC, for me,

Fallout 2, and Deus Ex,
and the shortest was
Vampire: The Masquerade bloodlines, which spent a woping 2 days on my PC.

no game has that sort of staying power on my computer.

I'm always taking things off and reinstalling other things.

Minesweeper...Seriously though, Diskworld. Loved the game and thought it was one of the funniest things I've ever played. I replay it just so I can watch it like a movie.

Doom 3 has been installed on my computer for over three years and I still haven't finished it.

harhol:
Doom 3 has been installed on my computer for over three years and I still haven't finished it.

Don't. The final boss freaked the shit out of me so much I refuse to play it again.

Well I don't have anything installed anymore anyways seeing as my PC's harddrive just decided to up and die on me. This piece of crap I'm using right now just gets on my nerves, but I'm too cheap to buy a new harddrive.

Regardless, I'm not much of a PC gamer, but I do enjoy playing The Movies. That was installed on my old PC for as long as I had it.

Worms World party.
I challange anyone to find a more simplistically awesome game than 2D worms.
That and the original Far Cry - Man i love that game.

The Elder Scrolls 3: Morrowind

I barely ever play that game but when I do it's amazing.

And I uninstalled Star Wars Battlefront 2 within the day I got it. For once, the console version is better

I doubt I'll ever take Rome: Total War off my computer. Out of apathy towards my PC more than anything.

Always installed - Master of Orion II