-Arcadia

-Gumboy Tournament

-Cricket Revolution

-Dinner Date

-Garry Mod

-Universe Sandbox

----------------KEYS------------

-Dino D-Day

-Dead Horde

-Iron Grip: Warlord

-Hammerfight

-Alien Breed: Impact

-DogFighter

-Syberia II

-A Stroke of Fate: Operation Valkyrie

-Tiny Bang Story

-Avernum: The Second Trilogy(4,5,6,)

-Oddworld: Abe's Oddysee + Exoddus

-Syberia

-The Void

-Cargo Quest for the Gravity

-Air Conflicts Secret Wars

-ION Assault

-Trauma

-Commandos Behind Enemy Lines

-Commandos Beyond Call of Duty

-Commandos 2 Behind The Enemy Lines

-Commandos 3 Destination Berlin

FOR L4D2?

Bastion key for L4D2, Ill go first.

my two worlds 2 for css+l4d2

la noire for l4d2

My Command and conquer 3 - Tiberium War for Your 2x L4D2?

or My Command & Conquer 4: Tiberian Twilight for Your 2x L4D2?

ninja blade

Maybe you're interested in something?

Bioshock 2