Game demos are about whetting the appetite, some say. If that's true, then Just Cause 2's was an all-you-can-eat buffet. You got to gorge on 35 square miles of the Lautan Lama Desert for a joyous 30 minutes at time. Over two million copies of the demo were downloaded, resulting in 2.5 million headshots and a million drivers kicked from vehicles, according to the developer's stats. Someone even made a mod for the demo.