Just Cause 2 is on sale at
Gamersgate for $4.99
I never actually finished the main "plot" because I waste all my time doing dumb sh
it like grappling fighter jets on take-off to cars and watching it flip out of control and into a mountainside. Or stealing a tank and going berserk in a town blowing the crap out of everything. Or stealing helicopters. Or grappling the head of a statue to said helicopter and trying to hit things with my improvised flying wrecking ball. Or abandoning said helicopter and grappling to the guy who just shot me down and stealing his helicopter. Or seeing how far down a road I can get trudging along with a minigun, destroying everything I come across. Or...
...anyway, for $5, you need to get it if you've never played it. It's like running around like a lunatic in a Michael Bay movie.