When I wrote my original review for this game I only gave it two stars and called it "poor" but I now take that back. I should've played it a bit more, given it more time and now that I actually have, I can honestly say that my opinion has changed alot - FIFA 12 is a fantastic game.
One of the things that did put me off at first was the new "Tactical Defending" system as I (like many other people) found it quite difficult to get to grips with. However, with a bit of perseverance I started to find it quite easy and can now safely say that it's a brilliant addition from EA. Marking players and keeping your teams shape is more easier than in previous FIFA's and the fact that you have to time tackles just right make defending almost as pleasurable as scoring a goal.
The "Player Impact" system is also a great addition and is really noticeable. Players injuries are now far more realistic and the ref even does 'drop ball' for teams to give back possession after a stoppage, it's quite smart.
You can edit the style of play in great detail including how tight or loose you want yours or your opponents (CPU) defenders to mark, how much error should be applied/reduced to shots, passing and crossing plus increasing/decreasing the goalkeeper's ability so in essence you don't have to stick with just the usual difficulty modes, they are there to be edited 'til your content.
Graphics are fantastic, the new menu layout is nice and even the soundtrack is a winner in my opinion so well done EA, FIFA 12 is a piece of footballing greatness (once you get used to the new features!)