For the celebration of the launching schedule there is an interacting event at Shinjuku station with a long large poster(12m × 2.4m) with 50 illustrations of all the titans. To participate this event Wall Shinjuku Recapture ウォール・新宿奪還作戦, all you need to do is to follow the map and scratch on the poster to find QR code to get the original wallpapers of Eren エレン Mikasa ミカサ and Levi リヴァイ for your smart phone.
If you are in Tokyo this week you should check this Wall Shinjuku and see the frightening titans and collect below wallpapers!
Project Wall of Shinjuku ウォール・新宿奪還作戦 special site
To know more about the game visit https://www.gamecity.ne.jp/shingeki/. (Japanese only)