Underworld

In NES, underworlds exist. It appears that they are easy to get into and get out of, but also function like mythological underworlds. Tommy's attempts to save the Bikini Bottomites from the Cutie pies led to them moving to an underworld, but unfortunately, it was the underworld of jelliens and they had to leave immediately. Food War VI was started in a new underworld, upon a fight between the King, Cetana, and his sister, Nue. They are home to some bone serpents.