Bioshock is by far the best game I have played on the Xbox 360 to date, and indeed a very long time. The graphics are gorgeous, and will have you gazing in awe from start to finish, often distracting you from the task at hand. The creepy sound effects and period music create a palpable and spine-tingling atmosphere. The plot and voice acting are amongst the most gripping and authentic I've come across in video-gaming, and I would go as far to say on par with the likes of groundbreaking RPG's `Mass Effect' and `Star Wars: Knights Of The Old Republic'. Incidentally, the plot is so captivating that a Bioshock movie is currently in the process of being commissioned. No doubt that will end up being a retched pile of sputum like every other game-to-film conversion that has gone before.
Anyway, back to the game. The conventional weapons in Bioshock are the standard melee weapon in the form of a the wrench, and several firearms including a magnum, tommy gun, shotgun, grenade launcher, chemical thrower, and crossbow, all of which can be fed various ammunition types which are tailored to inflicting more damage on a specified enemy. The use of a camera allows you take pictures, or as the game calls it "research", which provides damage bonuses against increasingly robust foes. Unlike just about every other first person shooter, the melee weapon remains a valuable and powerful weapon during the entire game thanks to clever upgrades that are available upon your journey. And this feature is not merely exclusive to the wrench, because firearm modifications subsequently become available which allow you to improve the rate of fire, damage, and ammo capacity of a weapon. Alas, there are only a limited number of upgrades to go around, so one must choose prudently which weapons and features to enhance.
Then there's more unconventional means of attack and defence through the use of `Plasmids'. Plasmids allow you to do such novel things as distribute fire, electric or even a swarm of bees from the palm of your hand. Then there's telekinesis, or enraging your enemies to turn upon themselves and annihilate each other. These sorts of attack are both fun and easy to execute, and work well alongside conventional weaponry. Just as conventional weapons require ammunition in order to be used, plasmid attacks similarly require energy called `EVE', which can be found scattered throughout each level inside hypodermic needles, which you then must inject into your arm.
There is also some other neat little challenges, such as hacking gun turrets, vending machines, health units and so forth, which result either in reward or reprisal depending on a successful or unsuccessful hack.
I could go on and on about this game, and in some ways I already have. Bioshock has everything any first-person shooter has to offer, and more. I can hardly wait for the sequel.