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Call Of Duty & United Offensive
Call Of Duty 2

To be honest, I could see them doing it for Linux, they are in dire straights right now, and need every bit of cash they can get.

If its successful on Linux, maybe a big publisher can pick it up...

Did you even need the CD Key for Fallout 3? I just remember using it for GFW Live.

Banshee Project probably.