Marvelous: Mouhitotsu no Takarajima

The great Captain Maverick was a legendary pirate who hid his treasure called "Marvelous", which could only be found by those who were willing to solve puzzles that many thought were unsolvable. However, a group of children prove them wrong when they head to the island where the treasure is said to lie. However, a group of pirates have similar intentions. The game was referred to as Ghost in Super Smash Bros. Ultimate, with the official novelization "Marvelous: Mouhitotsu no Takarajima".