Warner Bros has announced that the first story driven add-on for Batman: Arkham Knight, Batgirl: A Matter of Family , will be available on July 14 for season pass holders.

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Everyone else will have to wait an extra week until July 21, when it will be available for £6 (other territory prices TBC).Batgirl: A Matter of Family takes place before the events of Arkham Asylum, and allows players to take on the role of Batgirl for the first time in the Arkham franchise.It takes place in an all new location, with multiple missions, side quests and secrets. There is also a new hacking mechanic for you to solve puzzles with. Additionally, there is Dual Play functionality with Robin to perform dynamic take down moves.Batgirl: A Matter of Family is currently only announced for PS4 and Xbox One, as the PC version of Arkham Knight continues to be plagued by technical difficulties Make sure you check out IGN's review of Batman: Arkham Knight, which is an "impressive game on every level, with non-stop variety and great action."

Matt Porter is a freelance writer based in London. Make sure to visit what he thinks is the best website in the world , but is actually just his Twitter page