buy one, get one free deal going on select PC downloads right now. The only catch is that that the select titles are different for the "buy one" and "get one" parts of the equation. The titles that must be bought include the likes of Darksiders 2, Battlefield 3, The Witcher 2 and Saints Row: The Third, among others.
Available free titles include the Dead Space games, Dragon Age games, Battlefield: Bad Company 2, Mirror's Edge, a few Sims 3 expansions and more. The deal ends on November 5.