Gung Ho Online announced the next TV Anime collaboration in the Divine Gate smartphone game in Japan. On January 27, 2017 going to starts the official My Teen Romantic Comedy SNAFU (Yahari Ore no Seishun Love Comedy wa Machigatteiru.) collaboration where you can clear special stages and you can unlock characters from the show.
The collaboration event going to ends on February 10 at 10:59. The details can be found in here: https://divine.gungho.jp/member/collabo/oregairu/