Welcome to Pokemon Ultra Sun and Ultra Moon Adventures, the sequel to Pokemon Sun and Moon Adventures! SOLGALEO: A-Sunsteel Strike SPACE-Searing Sunraze Smash LUNALA: D-Moongeist Beam UP ARROW-Menacing Moonraze Maelstrom
Sprites are from the same site as Pokemon Sun and Moon Adventures. https://bulbapedia.bulbagarden.net/wiki the game is finished once you catch one
