Yesterday (29th November), the official website for the previously announced Hozuki’s Coolheadedness mobile game was officially released, revealing the mobile game adaptation of the series to be a puzzle game titled “Hozuki no Reitetsu~Jigoku no Puzzle mo Kimi Shidai” (鬼灯の冷徹～地獄のパズルも君次第).
The game will feature an original story written by the series’ creator Natsumi Eguchi (江口 夏実). asides from the key visual, no specific details have been revealed about the game.
Additionally, the official Twitter Account for the game has also be launched. In celebration of the Twitter Account launch, a special Twitter campaign will take place is currently running. Simply by following the official Twitter Account, players will have a chance to receive a 10,000 JPY Amazon Coupon!
— アプリ『鬼灯の冷徹～地獄のパズルも君次第』キャンペーン実施中！ (@hozuki_app) November 29, 2018