Song of the Deep is the story of a woman named Merryn on a rescue mission.

It exists in the Metroidvania sub-genre of action games, a term reserved for adventures designed in the tradition of Metroid and Castlevania. Like those classics, the more you play Song of the Deep, the more its sprawling maps and serpentine leves unfurl. The more you unlock, the more you can find, too.

Song of the Deep rewards those who take the time to explore its watery world on their way to rescue Merryn's father. In this guide, we'll show you how to make your way through Song of the Deep and find its secrets.