It is one of the few games that I consider EXCELLENT!
Well, the single player/campaign/story mode is perfect. You have your team (Americans, of course) and you are against the terrorists (you will see why they are called terrorists in the campaign). The story is balanced without the story of Call of Duty, it's just realistic!
The multiplayer is simply amazing. I could have spent a whole summer playing online and I wouldn't have gotten bored. The online servers are full even though it's 2016, although the truth is that all the online servers of all Battlefield games are full, even Battlefield 1942 and Battlefield 2 (yes, I checked both yesterday).
Battlefield games have always been fun, but with Battlefield 3, they made a big difference for the better!
Also, for a game from 2011, the graphics are fantastic. When I first played it, I spent the first 15 minutes just staring at the screen (TV), I was amazed. Frostbite had done an amazing job!