I'm not going to try to convince you that this is some landmark title that will make you see gaming as a whole in an entirely differently light after playing it, but I am going to say fuck you buy this god damn game.
Is it great? No, not really, but it's pretty fucking good and it's fun as shit.
Basically, if you ever wanted a game where you play as a Bond villain with the evil lair and the world domination schemin', this is it. This is the game you want, it's basically SimEvil. You build an underground base, hire henchmen, set elaborate booby traps, dispose of government agents that get in your way, and send your minions out to various parts of the globe to complete missions and spread your influence.
And as far as I know this is the only sim game in which you can shoot one of your employees point blank in the face to raise the loyalty of those around him.
Does it have problems? Yes, but is is $5.
Go buy it, go buy it right fucking now.