Here is an overview of the game, via its official website:
About
Hunt for treasure in a wild adventure!
In this single-player-focused game, play as a mechanic working with Deep Cut—a trio of swashbuckling musicians—and venture out into the mysterious Spirhalite Islands!
Customize your character, kit yourself out with mechanical gadgets and ink-splattering weapons, and take on waves of enemy Salmonids as you raid the islands for treasure.
Mayday! Mayday!
A strange storm forces a helicopter carrying Deep Cut to the Spirhalite Islands to make an emergency landing.
After a month of scraping together a hideout ship, you and your crew are ready to raid the nearby islands for the rumored treasure you came for—and find a way home!
Scour the Spirhalite Islands
This mysterious cluster of islands has a surprisingly diverse environment, both above and below ground. Go see what’s what!
- Head Out on Raids – Pick a destination and see what goodies you can find. Fight Salmonids, gather salvage, and uncover the mysteries of the islands.
- Score
Japanese