We've all played a lot of games, but everybody has played some games that left them absolutely baffled.
not by graphics or sound, but by the story. Or the mixture of the story together with the visuals and sounds.

What games have you played that left you absolutely breathless or adrenaline-pumped as the credits rolled by?

For me the first game that jumps to mind if Broken Sword 1
The last few scenes of the games, from the train all the way up to the ending was a breathtaking thrilling ride.

All the Ultima games were incredible, i just loved the story in those. And the way you created the Avatar, made me feel like I'm in the game. Too bad there's none coming out anymore, Lord British was good.

Myst III was also very good.
Compared to the previous ones I really didn't have much difficulty getting into the story.
While there was quite a bit of overacting on Dourif's end (all his roles require overacting) the ending was amazing. The different endings really.
I was really dissapointed when the credits rolled by because I wanted an even bigger ending (while the ending of Myst III was quite long already)

/signed ;)

especially Ultima 6!

Ultima 4, Dreamweb and Starcon 2.

All of these leave me with a warm, fuzzy feeling inside, and completing them give me an odd sense of having acomplished something great! :D

Consider Ultima fourthed.

These games have just stuck with me. I love it so much that sometimes I find myself humming Stones, one of the recurring songs in the series.

I don't know about games, but books and movies have a greater effect on me. But if I had to pick one I'd say 5 Days a Stranger or 7 Days a Skeptic.

fallout touches me :Brain:

and most probably DOOM 3 EVEN THOUGH ITS NOT OLD MUAHAHAHAH!

while its not an oldie (but a good example)
Halo had a terrific ending, I was pumped with adrenaline hours after completing it.

Best graphics/story mix NWN
An old game that left warm felling... hhmmm QfG 1, dragonshpere, etc... ... many many olides