• Megaversal system
  Megaversal system
  The Megaversal system, sometimes known as the Palladium system, is a set of mechanics specifically employed in most role-playing games published by Palladium Books, the exception is Recon. It uses dice for roll-under percentile skill checks, roll-high combat checks and saving throws, and...
  
  , role-playing game mechanics designed specifically for the various series published by Palladium Books
• Multiverse
  Multiverse
  The multiverse is the hypothetical set of multiple possible universes that together comprise all of reality.Multiverse may also refer to:-In fiction:* Multiverse , the fictional multiverse used by DC Comics...
  
  , or megaverse, any hypothetical set of multiple universes described in physical cosmology and other disciplines

See also

• Metaverse
  Metaverse
  The Metaverse is our collective online shared space, created by the convergence of virtually enhanced physical reality and physically persistent virtual space, including the sum of all virtual worlds, augmented reality, and the internet...
  
  , a virtual world that exists within the domain of cyberspace