Event[0] is a first-person science fiction adventure game developed and published by Ocelot Society. It was released on September 14, 2016 for both Microsoft Windows and macOS. The game follows an astronaut en route to Europa, who after their ship suffers a catastrophic failure takes refuge in a dilapidated leisure ship, with the only remaining entity on board being the ship's AI, Kaizen-85. Gameplay consists of exploring the ship, repairing it in hopes of escaping, and speaking with Kaizen-85, who is a functional AI that the player can have conversations with. The game received positive reviews upon release.