NOTE: Each line is an individual key. If anyone wants to split it up, I'm willing to work something out, if that's even possible.

Have (Steam):
Avadon: The Black Fortress
Fieldrunners, BIT.TRIP BEAT, SpaceChem, Uplink
LIMBO, Amnesia: The Dark Descent, Sword & Sworcery, Psychonauts
Swords & Soldiers HD
Vessel, Torchlight, Rochard, S.P.A.Z., Shatter
Wizorb, BIT.TRIP.RUNNER, Gratuitous Space Battles, Jamestown
World of Goo, Anomaly, Osmos, EDGE
Closure
Indie Game: The Movie
Shank 2
Amnesia Fortnight
Cave Story+
The Basement Collection
Dynamite Jack
Beat Hazard Ultra
Nightsky HD
Solar 2
Psychonauts, Stacking, Costume Quest
Double Fine prototypes
Brazen prototype
Bastion
Superbrothers: Sword & Sworcery EP
Splice
Crayon Physics Deluxe

Would really REALLY like (GOG):
Reus
Uru: Complete Chronicles
Unmechanical
Botanicula
Symphony
Trine
Whispered World, The
Deponia
Puddle
Syberia
Sid Meier's Alpha Centauri
Dungeon Keeper

Or any other games anyone can think of.

updated

[Have]

EDIT: Alakhazam3000 got the games in an even trade. Thanks dude.

Have from a past promo: GOG gift code for Neverwinter Nights 1 and 2

Want from the current promo: GOG gift code for The Settlers 2: 10th Anniversary and at least one of the following: Warlords Battlecry 2, Any Might & Magic RPG except the 6-pack

EDIT: Updated:

http://www.gog.com/forum/general/classifieds/post6568

and thanks to Catshade for nice trade!

...

You're welcome!

Games for Trade

Steam:


Keys:
Darwinia
Galactic Arms Race
Gettysburg
Grotesque Tactics 2 - Dungeons and Donuts
Hearts of Iron 3
iBomber Defense Pacific
Multiwinia
Penguins Arena: Sedna's World
Post Mortem
RIP - Trilogy
SpaceChem

GamersGate:

Keys:
Guilty Gear Isuka
Gun Metal
Street Racing Syndicate

Desura:

Keys:
Dawn of Fantasy
Fibrillation
Livalink
Major Mayhem
Talisman Prologue

Want:

Steam:
Depths of Peril
Endless Space
Flotilla
Gratuitous Space Battles + DLC
Sins of a Solar Empire: Rebellion
Stalker: Call of Pripyat
Velvet Assassin


GoG:
Might and Magic 7: For Blood and Honor
Might and Magic 8: Day of The Destroyer
Omikron The Nomad Soul

Desura:
Holy Avatar vs The Maidens of the Dead

Offers

[Have]

Blades of Time Limited Edition from the current Groupees

[Want]

Primal Fears from the current Indie Royale or Dungeon Hearts from the previous Indie Royale
Pulse Shift, Stardrone, or Adventure Apes from Indie Game Stand

...

If anyone has any spare Blood Bowl Legendary Edition codes from the Be Mine bundle, I have a pile of spare keys to trade....

Hah! Give me 1 minute and I'll send it your way.

I have, seams like no one has an extra key for Guns of Icarus Online anyway so what do you have?

Want:

PM a list of offers.

Have:

1 Divine Divinity (GOG Code)
1 Half-Life 2 (Steam)
2 75% off coupons for Total War: Shogun 2 (Steam)

I'll give the coupons for Shogun 2 away to anyone that wants. Just pm me.

Edit: Updated list, KoA: Reckoning and Half-Life 2: Episode 1 have been traded.