Batman Arkham City is the sequel to the awesome Arkham Asylum (oh man that game was so good), and in Arkham City we found all the character that was on previous game, included new mechanics, new gadgets and good history a bit cliche though, also we can walk free on Arkham City.
The story around Arkham City is 10 years after the events that happen in Arkham Asylum, and this will focus on a north Gotham side prison, where the prisoners from Asylum and Blackgate are being transferred. Bruce, see this prison will be bad for the people of Gotham so he decide to create a Anti-Arkham campaign, this will get the attention of Hugo Strange, a mad man psychiatrist with a evil mind and since has control over the prison he end up finding who Batman really is. Beside Joker, Hugo we will fight against others villains like, Mr. Freeze, The Penguin, Two-Face and the hottest Harley Quinn (one of my favorites character).
One thing we will notice when the story is moving is, the fault of this villains keep showing up is because of Batman, because if instead he detain, he would kill them the would show more, best example is Joker.
But we are not alone on this journey, in Arkham City we have the pleasure of playing with Cat Woman and Robin (shame is you on play as Robin in the DLC). The back story of Cat Woman is very good, and in the end we have a choice of helping Batman or leave Arkham City with the things we stole on the museum (i end up helping Batman).
Gameplay is super similar to Arkham Asylum, since the combos, the way to walk, hide even fly. Overall is good, glad didn't have much chances. Also graphically the game is also good, awesome details.
Well, if you are Batman fan you should play this, even if you haven't played the first one! Totally recommended.