As a collaboration with Sega's Virtual On video game franchise, Kamachi wrote the light novel A Certain Magical Virtual-On (とある魔術の禁書目録×電脳戦機バーチャロン とある魔術の電脳戦機 (バーチャロン), Toaru Majutsu no Index x Dennō Senki Virtual-On: Toaru Majutsu no Virtual-On) released on May 10, 2016 with mecha illustrations done by Hajime Katoki.[47] Sega AM3 and Dengeki Bunko later collaborated to develop the video game adaptation for the PlayStation 4 and PlayStation Vita[48] released on February 15, 2018.[49]