Games I have keys for:

Aquaria
Binding of Issac + WoL DLC
Cortex Command
Defcon MP
Fieldrunners, BIT.TRIP BEAT, SpaceChem, and Uplink
Frozen Synapse
Gratuitous Space Battles MP
Legend of Grimrock
Little Inferno
Red Faction: Armageddon DLC
Red Orchestra
Red Orchestra 2
Serious Sam 3 Deluxe
Serious Sam HD: The First Encounter
Serious Sam HD: The Second Encounter
SpaceChem
Titan Quest
Toki Tori
Warhammer 40,000: Dawn of War
Wizorb, BIT.TRIP.RUNNER, Gratuitous Space Battles, and Jamestown
World of Goo, Anomaly, Osmos, and EDGE

Mix and match them, make offers. If you've got rep, I'll go first, if not, we can use a middleman.