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 (franchise) "DOA3" and "DOA4" were released as launch titles for the Xbox and the Xbox 360, respectively. Some of the games, especially "DOA2" and "DOA5", were released in different editions and revisions. "Dead or Alive 5 Last Round" for the consoles is also available in the basic but free-to-play version "Core Fighters", lacking most characters and the story mode, that can be either upgraded to the full version or any additional content can be purchased selectively. A similar model is used in "Dead or Alive Xtreme 3". "Dead or Alive: Code Chronos" was the code name for a cancelled video game