Good old PC games

[Jolts]

Most minimum requrements for older games is PII233MHz or less, and 64MB RAM or less. Then there's the video card (I'm not too sure on that), and sound card (DirectX compatible, and a lot of games have the version of DirectX necessary on their install disc, this also applies if you choose to use a controller instead of the keyboard/mouse). Then CD speed (if you can't meet the requirement for this, then you shouldn't be playing video games on your PC ). Most older games I've seen only require a screen resolution of 800x600 16-bit (High Color) or less. I'm sure I'm forgetting something, but that's pretty much all the important stuff.

[Shoyku]

I doubt Black and White would run on a 600 mhz processor, good luck with that though.

It ran on my ancient 350MHz Pentium II. It'll work.

Oh, and add Deus Ex to that list.

[Erdrick Holmes]

Ooh, Deus Ex, I gotta get that. Thanks.

[NM]

Alien Vs Predator
Dark Forces 2 : Jedi Knight
Homeworld
Unreal
Quake

[Lindy]

Thief and Thief 2.

P233 Minimum, P400 Recommended
4XCD Drive
48mb RAM Minimum, 64mb Recommended
3D Hardware Accelerator with a minimum of 4mb Memory, 16 Recommended
DX7 Compatible Sound Card
Mouse and Keyboard, HD Space : 250mb

Specs for Thief 2, since Thief will have lower.

Sound good?

[Del Murder]

- King's Quest/Space Quest/Police Quest/Leisure Suit Larry and their many sequels.
- Indiana Jones and the Fate of Atlantis.

[Yamaneko]

Get Ultima 7 and 7.5, and run it through Exult. You will then be rewarded with dozens of hours of good gameplay.

[Phoenix Corps]

Bard's Tale series
Ultima Series
Eye of the Beholder Series
anything else from the late 80's early 90's by SSI

[Jolts]

Final Fantasy VII
Final Fantasy VIII (possibly, I can't remember)

...'nuff said ...

[Lindy]

- King's Quest/Space Quest/Police Quest/Leisure Suit Larry and their many sequels.
- Indiana Jones and the Fate of Atlantis.

While the latter is an impossibly brilliant game, the first set is only good if you enjoy having millions upon billions of ways of dying when you make even a small mistake. I don't know about you, but that's not the way I want to play a game. Sure that doesn't happen with Leisure Suit Larry, but they're just crap. I'm sure that Sierra games like that are free to download now though...

[Loony BoB]

Pacman
Pacgirl
CD-Man
Pong
Dig Dug
Space Invaders
Super Space Invaders
Raptor
Jetpack
Christmas Jetpack

I'm not sure if they'll run on your OS, though. You can try.

[White Raven]

Ah yes, add Lemmings to my list...so fun.

[Del Murder]

Dying in Space Quest is amusing.

[CloudSquallandZidane]

Kings Quest!!! Those games were hours of great fun and puzzle solving...

[Rase]

Thief: The Dark Project
Thief II: The Metal Age
Worms Armageddon
Age of Empires II
Age of Empires II: The Conquerors Expansion
Medal of Honor Games

I'm not certain ALL of those will work, but...