Resonance of the Ocean is a brief adventure game set on a deserted island where players collect items washed ashore to create musical instruments. These instruments are used to respond to mysterious sounds coming from across the ocean. The game features a hand-drawn art style and a calming soundscape composed of waves, footsteps, and the noises of found objects. Originally developed during the 22nd unity1week, a Japanese game jam, it achieved high rankings for its art and sound. The game can be completed in 10 to 30 minutes and is controlled using a keyboard. There is no save function due to its short length. The game has been updated with English localization and minor adjustments.