My list:
Beyond Good and Evil™
Earthworm Jim 1 + 2
Earthworm Jim 3D (Non-GoG)
Fallout
Fallout 2
Kingpin: Life of Crime (Non-GoG)
MDK (Non-GoG)
MDK 2 (Non-GoG)
Messiah (Non-GoG)
Oddworld: Abe's Exoddus
Oddworld: Abe's Oddysee
Robinson's Requiem Collection (Non-GoG)
Sacrifice (Non-GoG)
Unreal 2: The Awakening SE (Non-GoG)
Warlords Battlecry 3
Jagged Alliance 2
Stonekeep
Tom Clancy's Ghost Recon (Non-GoG)
Let's do this :D

Again with you? :D
OK, I accept. I am @ work now and via my cellphone, that means posting here is so un-freaking-comfortable :)
So you have to find my list of games by yourself or wait until tomorrow morning.

Love the idea and have a bit of spare money ... so here's my current list:
From GOG:
1nsane
Arx Fatalis
Broken Sword 2: The Smoking Mirror
Broken Sword 3: The Sleeping Dragon
Chesmaster 9000
Disciples: Sacred Lands
Disciples 2
Duke Nukem 3D (Gift from FatDiva \o/)
Fallout
Fallout 2
Fallout Tactics
Flatout
Freespace 2
Ghost Master
Giants: Citizen Kabuto
Gothic 2 (gift from Zingard \o/)
The Guild
Hostile Waters: Antaeus Rising
Painkiller Black Edition
Perimeter
Sacred Gold (gift from DrIstvaan \o/)
Sacrifice
Stronghold
Toca Race Driver 3
Unreal Tournament GOTY
Unreal Tournament 2004 ECE
Outside GOG:
Beyond Good and Evil [Though my copy is back at my parent's place (i.e. in a different country)]
Jagged Alliance 2 (and Unfinished Business)
I don't mind violent games, but have no interest in the postal series.
Note: I do not have a Joystick, Wheel or gamepad. And my Laptop just about manages to deal with Painkiller (with some reduced settings). It supposedly can handle FarCry. That is ... ask me to check with that can you run it webpage before gifting hardware intensive games :).
E-Mail: are.you.human [at] gmail.com

Okay, I've found a 6 and 10 $ game. Your choice again.

$6 - Cannon Fodder
$10 - Sacred
It's your call. We can even trade both $6 and $10 ones if you want.

I'll take the 6$ one for now, but I've played Cannon Fodder back in the day, about halfway through, and sorry to say I did not enjoy it at all... I now this in a way negates the purpose of the thread but any other game will probably do.
I'm gonna give you Descent 1 + 2, if that's okay. It's truly a classic game, has many graphics improving mods (if you're so inclined to use them), and still rocks to this day.

You can give me any game you'd like. Descent has been sent. Enjoy!

Anyone kind enough to send me spellforce platinum? : D

Isn't most of the fun derived from not knowing what the other user will give you? ;)

hmm,no, not for me. ; )

Sacred is on its way. Have fun.

Ok I got:
Beneath A Steel Sky
TeenAgent
....
uhh Ok nevermind.

I can get you Lure of the Temptress. : )

Poke.
Who wants a game?