There are games out there that approach satire, Bayonetta did it in a couple of smart ways, but Achievement Unlocked 2 takes it to a whole new level. It's not necessarily fun, but it is funny, and quite smart in its own way.
Achievement Unlocked is just an endless series of achievements, rewards, and bullcrap - there is no game per se - and in doing so it skewers the Farmvilles of the world and forced me to question my increasing achievement whore-ness! Clever stuff.
Achievement Unlocked 2 [Armor Games]