Abyss Haven: Deep Colony

Down here, light is territory.

Abyss Haven: Deep Colony is a relaxing idle base-building game and underwater city builder set on the floor of a dark ocean. Build a cozy underwater colony in cross-section, keep the lamps glowing, and drill deeper into the trench, one floor at a time. Your haven keeps working while you are away.

BUILD YOUR UNDERWATER BASE
• Build and upgrade 6 room types: Oxygen Pump, Kelp Farm, Power Reactor, Living Quarters, Lab and Lighthouse.
• Up to 4 construction jobs run at the same time.
• Oxygen, Kelp and Power flow into shared storage on their own. No endless tapping to collect.
• Watch your storage bars. The Cashbook shows income, spending and net per hour, and "Fix it" points to what needs attention.

LIGHT IS TERRITORY
• Every lamp costs Power. Switch room lights on or off to balance your budget.
• Run low on Power and output slows while darkness creeps in. You never lose rooms or dwellers.

DIG DEEPER
• Your drill runs on spare Power. Each new floor takes you 50 m deeper and opens 2 more build spaces.
• Plan ahead: deeper floors cost more Power to dig.

A CREW WITH JOBS
• 14 dwellers, 5 jobs: cook, engineer, botanist, scientist and diver.
• Put the right dweller in the right room, or use Auto-assign.

SUBMARINE TRIPS AND GLOWING CREATURES
• Send the submarine on 15-minute, 1-hour or 4-hour trips for loot and creature eggs.
• Hatch eggs in the Lab and meet 10 sea creatures, from the Moon Jelly to the epic Sea Dragon.
• Place a creature in a room and it becomes a living light source. Rarer creatures appear as you dig deeper.
• Collect them all in the Creature Book.

IDLE AND OFFLINE PROGRESS
• Your colony keeps producing while you are away.
• The Cargo Hold keeps up to 8 hours of overflow when storage is full, then it flows back in when there is room.
• No internet connection needed to play. Your progress is saved on your device.

SMALL MOMENTS
• Fix leaks before they slow a room down.
• Tap the occasional bonus bubble for a little extra.
• Next Goals always show 3 clear things to do, and Captain Marlo guides you through your first dive.

COMFORTABLE TO PLAY
• Color-blind mode and a big text option.
• Separate music and sound volume, and graphics quality settings for older phones.
• Landscape, single-player, in English.

This version has no ads and no in-app purchases. More rooms, creatures and depths are coming in future updates.

Found a bug or have an idea? Use "Report a bug / Feedback" in Settings. We read your messages.

Dive in and build your own haven in the deep.