Under the Nitroplus label, Urobuchi has written visual novels such as Phantom of Inferno, Kikokugai: The Cyber Slayer, and Saya no Uta.
The Exoframe technology originated from aliens who made contact with humanity in 2014, and asked to trade one ton of limestone in exchange for one Exoframe.
Phantom of Inferno was adapted into the Phantom ~Requiem for the Phantom~ television anime, and Fate/Zero was similarly adapted into a television anime.