Explore the dark depths of the ocean to find the treasure that's been lost for centuries!
Hold W or left mouse to move up, and release to move down.
Press J or right mouse to change the angle of your flashlight.
Collect as much gold as you can, but be careful not to run out of air. You can refill your air tank at the surface, or if you run into a bubble.
Hitch a ride on a passing manta ray: they help you swim up and down faster, and since they're doing the work, you won't use up your air as quickly. But be careful: they get scared off by the bubbles.