Z/X -Zillions of enemy X- or Z/X (ゼクス Zekusu) for short, is a trading card game and media franchise created by Broccoli in collaboration with Nippon Ichi Software. Its game design was designed by Yūhodō. It is marketed as a "free-to-start" trading card game, where player is able to try and play the game with free cards available to pick in various card shops and download from their official website. Other than free cards, various commercial products is also available for player to choose from.