The Coming of the Quantum Cats can - given different social conditions - develop completely different character traits (timid or assertive, benevolent or predatory, etc.) The title refers to the famous thought-experiment known as "Schrödinger's Cat", where the outcome of a real-world event depends on a quantum event. By some interpretations, the real-world object, in this case a cat, must be in two states simultaneously until it is observed. However, the story is more closely related to the many-worlds interpretation of quantum mechanics where all possible outcomes of an event occur, each in its own parallel universe. The same concept was treated, somewhat more pessimistically, in
Dead or Alive 5 Ultimate Dead or Alive 5 Ultimate Dead or Alive 5 Ultimate (abbreviated to "DOA5 Ultimate" or just "DOA5U") is a fighting game in the "Dead or Alive" series, developed by Team Ninja, and released by Tecmo Koei for the PlayStation 3 and Xbox 360 in September 2013. It was followed by an arcade edition later in 2013. It is the first arcade game to be released by Koei Tecmo since "Dead or Alive 2 Millenium" in 2000. "DOA5 Ultimate" is an expanded edition of 2012's "Dead or Alive 5", incorporating some features from the PlayStation Vita's "Dead or Alive 5 Plus"