Gaming Nexus writes: "The graphics and music in Ocean follow a soothing coral reef theme. Crashing waves, bubbles and rushing sand make up most of the sound effects. The visuals make it look like every game is played near or under a placid shoreline, and Shinen's expert skill at harnessing the DS's graphical horsepower is evident even in this casual puzzle game.
Ocean has six puzzles to choose from, all available from the start. The first is Zen-stones, a simple stone matching game. Find two stones adjacent to each other, and tap them both to eliminate them. When no matching adjacent stones are left the game is over."