Pokémon Ultra Sun and Ultra Moon are part of the 7th installment of the main series Pokémon games. They were developed by Game Freak and published by Nintendo on November 17th 2017. Like Pokémon Sun and Moon, these games take place in the tropical Alola region, a take on real-life Hawaii and it's surrounding areas. These games take place in an alternate timeline to Pokémon Sun and Moon, featuring new Pokémon, new forms for existing Pokémon, and more.