An adventure game called Mobile Investigator 7 DS: Buddy Sequence (Keitai Sousakan 7 DS Badi Shiikuensu) was published by 5bp. for Nintendo DS on March 26th, 2009 in Japan.
It won the 1st Tokyo Drama Awards: Best Kids Drama.
"Ketai Sosakan 7" is overseen by film director Takashi Miike.
A novel published under the title "K-tai Investigator 7: Sosuke Takimoto Case File" was released 2008-Nov-18. It takes place after the Zero-One incident in episode 23.