[H]Portal [W]Paypal/offers

darksiders key ?

One of the following for your Portal?

• Crayon Physics Deluxe

• Puzzle Bots

• Trauma

Magicka for it?

Demigod

Serious Sam Classic: First Encounter?

A key from here?

http://www.steamtrades.com/trade/hph5X/h-keys-superbrothers-isaac-shank-2-cave-story-etc-bioshock-gift-w-jedi-academy-offers

Any game (or a combination, depends) from this list?

Commandos: Beyond the Call of Duty

A Game of Dwarves

Miner Wars Arena

Hearts of Iron III

Zombie Driver HD

Shadowgrounds

Darwinia

Multiwinia

Uplink

Any of these?

• Beat Hazard Ultra
• NightSky
• Crayon Physics Deluxe
• Superbrothers: Sword & Sworcery EP
• Red Faction: Armageddon
• Red Faction: Armageddon - Path to War DLC
• Men of War: Assault Squad - DLC Pac

Red Orchestra 1&2?

Death Rally?