Gears of War 2 is a game worth purchasing, provided that you have
a) a friend to play it with, whether split-screen or co-op
or
b) a girlfriend who is, bizarrely, totally in to playing video games, and is not at all turned off by the thought of an alien monster exploding into a shower of blood, guts, and meaty bits all over the screen, and thinks it is, quote, “totally awesome” when you head-shot a grub and the body continues to stand upright for a couple seconds, before collapsing. She should be good enough to play through the game, ideally, on Hardcore mode - which is, I think, the sweet spot for a game like this, where it actively punishes you for not adhering to the game mechanics but does not do so in a manner so brutal that you feel inclined to throw the controller to the floor, and declare that “this shit is fucking stupid.”
The game is ridiculous. Without spoiling too much, there is a part where you are eaten by a giant worm, and then you fight your way through the worm’s bowels to cut its several hearts out of their resting places with your chainsaw-equipped gun. Later you do somewhat the same thing with a giant fish, only this time you are only in the thing’s mouth. as a rule of thumb, any time your characters have to make reference to the completely fucking ridiculous way you defeated an enemy and do so seriously, as if this is a sensible proposition, my suspension of disbelief is gone.
Ridiculous or not, overly maudlin or not, the game is fun. That’s the most important part, anyways - I have certain other amusements to occupy me if I’m looking for a deep story with real characters. These amusements are called, collectively, Fallout 3, and in them I am a Saint, striding the landscape, alien blaster at my side, plasma rifle on my back, wearing a suit of piston-driven armor stolen liberated from the all-encompassing forces of the Enclave, for the sole purpose of destroying them utterly, to ensure the freedom of all who dare eke out a living in the capitol wasteland.
That shit is ridiculous, but it is ridiculous in a way a game should be.