hmm lets see, out of "oldish" games, I still play...
Full Throttle
Dark Forces
Duke Nukem 3d
All the Leisure Suit Larry games
Where in ____ is Carmen Sandiego
Street Rod 2
Wolfenstein
Doom 1&2, though I play them with the GL mod
Quake 1&2
Oregon Trail

I tried playing Age of Empires again recently but discovered the game play was soooo much slower than even AoEII and AoM that I had to quit...it just took too long to get anything done.

I still enjoy playing AoEII from time to time, though.

On my ebay wanted list:

Full Throttle
Space Quest Collection
Police Quest Collection
Kings Quest Collection (notice the pattern?)

Going to crack on with Sam and Max and The Dig (Robert Patrick) soon...

Well it looks like some frineds and I are going to LAN through Serious Sam this weekend. Nothing like spending a Saturday with some friends twitch gaming powered by Mountain Dew and sugary snacks. Maybe we'll play through Serious Sam: The Second Encounter another weekend. Good times, good times...

As a side note, I see that Serious Sam 2 (not SS:TSE) is coming out soon. Sweet. Hopefully more developers will use these absolutely beautiful game engines.

Happy now - finally picked up Full Throttle.

All for the costly sum of £3 - probably about $5

Tetris

And there's an ice cream truck in my neighborhood that plays the Tetris theme :)

I always liked the Wing Commander series. But I lost the slowdown emulator needed to play them. And even then, it'd still crash now and then.

Oldest pc game I actively play is probably Starcraft... I've got a few that I would play if I could run DOS games, like X-com terror from the deep, or duke3d, but I don't miss them too much with the newer games that are out now :P

Xcom bring back memories. I think there was a prequel that I used to play called UFO Enemy Unknown.

I have the latest UFO game called Aftermath (I think) which looks like it could be quite similar. Not got around to playing it yet

Starcraft....and I will probally play it untill they finally make a Starcarft II....which may never happen

Starcraft
Doom
Quake III
Tetris.

FALLOUT and FALLOUT 2. Right now Im going through FALLOUT 2 with a massacre character: no quests, no BS trading or talking, just wiping out every city I come across.

Maybe I should seek professional help

Oldest PC Games I Still Have Installed/Play Every Now & Then.
 

Crusader: No Regret
Crusader: No Remorse
Descent -The original NOT the second one cause that really sucked!
HomeWorld
MechWarriors 1, 2, 3, & 4 with the add-ons
Return Fire
Tyrian 2.0
This Means War!
Maxis Sim-Tower
Speed Rage

&

LemPaint :hmm:

Although, I can't stop playing FreeLancer and Morrowind (GOTY Edition)... probably due to the fact that both have a BUTT LOAD of mods written for them. :thumbsup:

Ahhh, I LOVE old games, because theres the fun factor that keeps bringing you back, with the added joy of all the good memories associated with them.
Every couple of months, I find myself playing through Fallout and Fallout 2 again. Easily my favorite RPGs ever. I can't wait for Fallout 3! Its being done by Bethesda Softworks, which is the same people who did Morrowind and that entire series, so I know that its in good hands... :) I also play some from when I was little, from time to time, from the Super Solvers series. Most notably Gizmos and Gadgets, so simple, but so much fun, Number Munchers and Operation Neptune. And just today I reinstalled Heroes of Might and Magic 3. Classic game that never gets old (to me atleast). If you like that series, then be aware that a Heroes 5 is in development. (yay!)
Another one is Gazillionaire, very fun trading game in space. Thats pretty much it.

Professional? Naw. I made it my personal quest with my solo PC to wipe out every living being in Amn. So far, so good.

I have seen great old school games here.
But where is SimCity2000???? One of the greatest games ever.
Duke Nukem and all is ok. But sim city 2000 rocked, I still play it a lot.

Hehe, my friend picked up Oregon Trail at a garage sale this last weekend. I'm looking forward to installing it on my computer and giving it a go.

Quake III
Tetris
liero ;)
well thats all

http://www.solidsharkey.com/oregon.html

You can pick up the Apple IIe emulator and the Oregon Trail ROM at the above link. I played it a few months back and actually made it all the way to Oregon - something I never accomplished back in junor high. Good times, good times.

Wolf3D
Spear of Destiny
Doom 1 and 2
Mechwarrior - the original (NOT Mechwarrior 2)
Quake & Quake 2
BIG fps fan here!!

I've been playing a bunch of Civ3 via email lately.

Oh and I just bought UT2004 from GoGamer for $12 or something ridiculous like that. I haven't installed it yet though. Thats pretty old. I was playing the original UT a couple months ago with some other guys after hours at work. Ran well on our work machines. If you install the last patch for the orig UT it doesn't need the CD to run so we could get a decent LAN game going without using a cracked exe.

Not exactly cool to the developer of the game, but...

Prince of Persia from my old 286 VGA - from an era when a whole game fitted on a diskette

oh and arkanoid 2 - revenge of Doh

Scorched Earth
Sid Mier's Pirates! (Although the new one now)
Shadow Warrior

It is a bummer though, there are some games that have a hard time running on WinXP.

Shadow Warrior just hit open source, it's not all bad!

I can't believe no one mentioned Wizardry. I think that game came out in 1980. One of, if not the first RPG's for the computer. I still play that occasionally. I also play a Doom clone called Heretic on occasion.

nethack is evergreen
i started playing C&C gold few days ago
currently trying to find a comp with win98 to play older gmaes like betrayal at krondor