Buy Crysis

As simple as it seems, there's good reason to actually BUY the game. For one, the first ~70% doesn't suffer from the shoe-horn of "oh crap we need to put plot here" Secondly, yes your machine will run it. Actually, let me REiterate that for your benefit,

YOUR MACHINE CAN RUN IT.

Don't believe me? My MacBook Pro with an x1600 ATI can run it on the lowest settings at playable frame rates. Throw the resolution down (i know, it burns, it's wasted pixels and is tantamount to listening to Classical music at 64kbps) and play the game.

The very idea of being airdropped into a tropical island to run around (completing mission objectives and) causing all kinds of hell for the N. Korean soldiers with no strict, linear, areas to play around in - unlike even the "beloved" Halo 3. Hell, it's cheaper than an xbox game, and you can use Keyboards and Mice (for those rare individual who play with 2 mice, you know who you are Jeff) instead of a game pad.

That's right, I went there; game pads aren't the best for shooters. Halo and other shooters on the consoles work for 2 very good reasons. They make the gunplay slow, and they design the interactions according to cold hard realities of controllers.

If you do actually purchase the game, feel free to use my Amazon Associates link to help a not-so-starving geek out.