What's the catch? No catch, except you will need to install the GameFly download client. I realize most serious gamers have played it by now, while others might have scooped it up when it was on sale for $5, but if you haven't yet had the pleasure (or the $5) - well, now's the time. While supplies last, GameFly is giving away one of my all-time favorite games: BioShock (PC).
I'm not scheduled to write another Cheapskate post until tomorrow (it's one you won't want to miss, by the way), but I couldn't let this go. BioShock is free for a very limited time.