Keys or humble gifts :-

Antichamber - 1 key
Beat Hazard Ultra
Blackguards - 1 Key
Broken Sword 2
Broken Sword: Director's Cut Steam key
Capsized
Card City Nights
Cave Story+
Command & Conquer: Red Alert 3 - Uprising Steam Key
Crayon Physics Deluxe Steam Key
Critical Mass
Crusader Kings 2
Crysis 2 Maximum Edition Steam Key
Dead Space Steam Key
Dear Esther
Dyscourse
English Country Tune x2
Escape Goat - 1 Key
Escape Goat 2 - 4 Keys
FEZ
Forced - 2 Keys
Greed Corp
Humble Introversion Bundle Steam Key
Incredipede
Infinifactory - 8 Keys
Intrusion 2 x2
Little Inferno
Medal of Honor Steam Key
Mirror's Edge Steam Key
Nightsky Steam Key
Oddworld: Abe's Oddysee
Oil Rush
Payday 2 - 3 Keys
Reus - 3 Keys
Robot Roller-Derby Disco Dodgeball - 2 Keys
Sid Meier's Civilization® III: Complete
Snapshot Steam Key
Splice Steam Key
Starbound - 3 Keys
Star Wars™ Battlefront™ II
Superbrothers: Sword & Sworcery EP Steam Key
Talisman Prologue
Talisman: Digital Edition: Gambler Character Packs
Talisman: Digital Edition: Martyr Character Packs
The Binding of Isaac + Wrath of the Lamb DLC
The Swapper
Thomas Was Alone x2
Tiny and Big in Grandpa's Leftovers
Worms Reloaded

Steam Gifts :-

Starvoid
The Binding if Isaac x2
Binding of Isaac: Wrath of the Lamb
Terraria x2
Audiosurf
Epigenesis
Gun Monkeys
PAYDAY 2: A Merry Payday Christmas Soundtrack
Talisman: Digital Edition
Habitat
Mount Your Friends - 2 Keys
Don't Starve Together
Serious Sam 2
Serious Sam: The Random Encounter
Serious Sam Double D XXL
Garry's Mod x4
Just Cause 2
Sanctum 2 x3