Spike Chunsoft just released Attack on Titan: The Last Wings of Humanity Chain, an enhanced version of their titan hunting action game. One of the additions is an extra scout who isn’t in the anime series or manga. Verräter comes from the social game Attack on Titan: Roar to Freedom.
While Attack on Titan: The Last Wings of Humanity has not been officially announced for the West, Siliconera has heard that Spike Chunsoft was planning to license the game earlier this year. Perhaps, we’ll get the upgraded version with Verräter, more Titans, and online play.