日本一ソフトウェア
, also known as Z/X Zillions of enemy X, is a collectible card game produced by Nippon Ichi Software and Broccoli. It is marketed as the first "free" collectible card game, with a free deck offered to players at card shops and events in Japan. A PlayStation 3 game titled "Z/X Zillions of enemy X: Zekkai no Crusade", developed by Nippon Ichi Software and produced by Broccoli was released in Japan on May 23, 2013. A manga adaptation written by Broccoli with art by Karegashi Tsuchiya began serialization in Shueisha's "V Jump" from September 2012. A 12-episode anime television series adaptation titled "Z/X Ignition" aired between January 9, 2014 and March 27, 2014.