Isles of Sea and Sky is a top-down puzzle game in a retro pixel art style. The action takes place on picturesque islands, where the player must solve puzzles of varying difficulty. The relaxing atmosphere is complemented by pleasant music and no time limit. Most of the puzzles involve moving boxes and stones. The protagonist possesses remarkable strength, allowing him to move them with ease. The player must close holes, find ways to open passages, and create logical chains.