[H] L4D2 (steam gift) [W] offers

Magicka or Far Cry 2?

Left 4 Dead 2 for any one game from this list:

Chaos on Deponia

Guns of Icarus Online Collectors Edition

War of the Roses

Hero Academy - Gold Pack

Poker Night 2 Pre-Purchase

Painkiller: Hell and Damnation

Assassin's Creed

BioShock

Trine 2: Complete Story

Monster Loves You!

Forge

Penumbra Collector Pack

Men of War: Vietnam

Red Orchestra 2: Heroes of Stalingrad - GOTY

A.R.E.S. Complete Edition

Orcs Must Die! 2

Cubemen 2

Left 4 Dead 2 for any two games from this list:

EDGE

Nation Red

Serious Sam Double D

The Binding of Isaac

Sanctum

Psychonauts

Zero Gear

Revelations 2012

BIT.TRIP RUNNER

Hydrophobia: Prophecy

Sniper Elite

Magicka

Poker Night at the Inventory

Sniper Ghost Warrior Gold Edition