Dive deep beneath the ocean in this atmospheric underwater arcade game. Station Nereid has gone silent at the bottom of the trench, and thirty-eight crew are waiting to be rescued.

Their last transmission said only this: "...something down here is waking up..."

No submarine can reach them in time. Except one old bathysphere, and its pilot. You.

DIVE THROUGH FOUR OCEAN ZONES
Descend from the sunlit shallows through the Twilight and Midnight zones into the black Abyss. Each zone of this deep-sea dive gets darker, faster and stranger, and your lantern matters more with every metre.

RESCUE THE CREW
Escape pods drift through the dark with their beacons blinking. Grab them and send the survivors up to the surface. Can you rescue all 38?

WATCH YOUR OXYGEN
Your air drains on every dive, and a cracked hull leaks it faster. Collect air canisters before the gauge runs dry.

SURVIVE THE DEEP SEA
Dodge jellyfish and sea urchins, slip past shoals of lanternfish, don't fall for the anglerfish's glowing lure, and watch the edges when the water turns red.

FIGHT BACK
Fire sonar pulses to clear the water around you, and raise your shield to plough straight through danger.

UPGRADE YOUR BATHYSPHERE
Collect glowing copepods on every dive and spend them on stronger hull plating, a bigger oxygen tank, a longer-lasting shield and an extra sonar charge. Rescue crew to earn new hull finishes, each with its own colour of lantern.

PICK UP WHERE YOU LEFT OFF
Reached a new zone? Continue from its checkpoint instead of starting from the surface.

REACH STATION NEREID
Make it to the station at 2,600 metres and find out what is waiting inside. Then unlock Endless mode and see how deep you can really go.

FEATURES
• Easy one-handed controls: drag anywhere on the screen to steer
• A pixel-art story intro
• Hand-drawn 1930s-style bathysphere and deep-sea creatures
• Atmospheric soundtrack and underwater sound effects
• Plays fully offline, no account needed
• No ads in this version

Turn on your lantern. Begin descent.