What else can be said that hasn't already been said about this game? There are further superlatives to be used but in the end "awesome" will suffice nicely!
This is not a game you will "get" straight away. If there is one minor criticism that can be raised it would be the way the game commences - a rather loose and rushed sequence where your plane crashes into the ocean without very much contextualising prior to that. However, as the plot progresses this comes to make more sense, as does your very presence as a player in Rapture's undersea environment.
This alone, coupled with the fabulous array of Art Deco architecture and design, means you will be interacting in an environment that has not been featured in any other game before or since.
So the gameplay - immediately you are working with tools and weapons and this is boosted further a couple of levels in when you obtain your first plasmid. The uniqueness of each plasmid and the fantastic concepts behind them of them (wasps - you've got to see this power in use to get the full impact) are just great. Very quickly you'll settle on a couple of favourites; mine was electro-bolt. Alongside these what FPS would be complete without pistols, shotguns and crossbows? These are all there to be used.
Achievements are very accessible, although one or two near the end were pure guess work - taking Sander Cohen's photo when he is dead, for example. The rest are a matter of utilising original features such as the camera, killing certain gene splicers and getting through the remaining levels.
The dialogue that goes along with your journey is good and collecting the additional voice recorders throughout the game provides hints to secrets and these add further background.
Hacking does get pretty repetitive but does genuinely help you as you disable locks, security cameras and gun turrets or open safes for lots of cash and goodies.
The supply of equipment and ammunition is quite well staged as at times I was running very low; dangeroulsy so in some instances and this means you conserve your shots rather than go hell-for-leather.
There are a couple of spoiling points - I thought visibility through the suit porthole when finally your character becomes a Big Daddy is awful, and rather than making the game more challenging actually spoiled it greatly. Also the end is as rushed as the opening sequence and a little cheesy.
However, I still have "Welcome to the Circus of Value!" ringing in my ears and the Little Sisters / ADAM / EVE creations are pure genius from a story point of view.
This game sells regularly for under a tenner and I obtained a limited edition metal tin version from Play for less than the value of a brown-back, so why are you wasting time reading this?! Get yourself a copy today and enjoy one of the best gaming experiences you will have on any platform, ever.