What is your favorite OLD PC game?

[JodaSFU]

Transport Tycoon Deluxe. I've wasted a lot of hours of my childhood on that game.

Edit:
Also: Commander Keen, Raptor, Command & Conquer, The Incredible Machine and Wolfenstein 3D

 

[TaborMallory]

-Myst
-Riven
-Starcraft
-Age of Empires
-Lemmings

Can't beat the classics.

 

[Khazoth]

Septerra Core, Unreal, and Planescape Torment.

 

[t0rm3n7]

Definitely Bang-Bang on Windows 3.1
Edit: I forgot to mention The Incredible Machine and Number Crunchers

 

[Wanderer1911]

Duke Nukem 3d (1996), Age of Empires (1997), Tomb Raider (1996)
Tomb Raider was probably my fav but I think I logged the most hours on Duke Nukems level editor. I still play Age of Empires to this day

 

[Captain_Caveman]

Space Quest III: The Pirates of Pestulon

http://en.wikipedia.org/wiki/Space_Quest_3

http://www.mobygames.com/game/dos/space-quest-iii-the-pirates-of-pestulon

http://upload.wikimedia.org/wikipedia/en/6/60/Sq3.jpg

http://www.mobygames.com/images/covers/large/1140552261-00.jpg

 

[JC175]

Half Life and The Legend of Zelda: A Link to the Past would be my main two picks.

 

[videot76]

The Quest for Glory series, and practically ANYTHING by LucasArts (though Monkey Island and Zack McKracken have special places in my heart).

 

[burninjack4l]

-Starcraft
-Fallout 1/2
-Dune 2000
-Recoil
-Unreal Tournament
-Escape Velocity

 

[minarri]

Perhaps this isn't quite what you were going for with "old games" since it was released in 1995, but I'm a young 'un so I was just a kid at the time.

Ascendancy!

It was my favorite game for a number of years. Sure the technology tree was the same for everyone in the end, and the graphics were kind of meh, but the various styles and the diversity of the universe was amazing. The music was pretty nice too! Swaparamans <3

 

[antipunt]

Warcraft II

 

[Dirty Apple]

The ones that stand out for me are:

{PC}
Dungeon Keeper
Betrayal at Krondor
Duke Nukem 3D

{Sega:MC}
Phantasy Star
R-Type
Golvellius

 

[Dr Spaceman]

Hmmm... Jedi Knight. The first one. One of the first great FPS games I played. Sure, lightsaber combat was perfected in Jedi Knight II but JKI was the first great implementation of the classic weapon.

 

[Kstreitenfeld]

Command & Conquer! Seriously the game that got me into computers.

Here is a taste of just how awesome it was http://www.youtube.com/watch?v=1ZTHFRadJwI

Oh and Diablo gets a honorable mention.

 

[nolies]

Oh, Wasteland. How I love thee.

It could never be done again, but I do love that game.

 

[curlycrouton]

Definitely Heroes of Might and Magic.

 

[fenrizz]

Doom, Duke Nukem, Wolfenstein 3D, Commander Keen
and Street Rod!

 

[Skeleon]

Dangerous Dave, it was the first PC Game I played.
Although I had played a few games on an ancient Atari beforehand.