This is more of a simulation where you play as a fish in a large underwater world 49km2 and 100m depth. There is no real 'Game Play' but it's more about swimming around and discovering what lies beneath the surface. Select between multiple fishes. Clownfish, shark, octopus, trout, cod, salmon and more. Use the keyboard to steer the selected fish where you want. Use the mouse to pan the camera and look around.