The game "Attack on Titan: The Last Wings of Mankind" received a DLC called "Getting Levi," available for download until January 31, 2014.
But the new thing now is a DLC for Sasha, in which you'll play as Sasha Blouse, and just like Levi's DLC, if you finish Sasha's story you'll unlock weapons and parts.
The game only features the main storyline with the characters Eren Jaeger, Mikasa Ackerman, and Armin Arlert.
Ultimately, the game was released only in Japan for the Nintendo 3DS.