Illustrated dark underwater cave with daylight overhead

A game by HighFly Studios

DEEP
BREATH.

The way down is only half the journey.

A technical cave-diving simulator in development for Windows PC. Explore underwater caves while managing buoyancy, gas and visibility, with an emphasis on calm, deliberate decisions.

Beneath the surface

01 / The experience

Quiet water.
Meaningful decisions.

In a cave, attention matters. We're building a diving experience where movement, equipment and the environment work together, and getting home is part of the adventure.

Find your balance.

Control your buoyancy and fin deliberately. Small adjustments shape how you move through the water.

Know your resources.

Check your instruments and keep track of your gas. Pay attention to the choices that leave room for a return.

Read the cave.

Follow the route, use your torch and watch your visibility. We're refining the rock, light and water that make the world feel present.

02 / A look below

From the development build.

In-engine development captures, September 2026.
Environment, lighting and geometry are works in progress.

Torch-lit rocky cave passage with a visible guideline leading through the opening — 01 / Into the upper passageIn-engine development capture · September 2026

Daylight and rocky cave entrance seen from beneath the water surface — 02 / Looking up from belowIn-engine development capture

Torch illuminating underwater rock beside a vertical shot line — 03 / Light in deeper waterIn-engine development capture

03 / The journey continues

Still taking shape.
Worth following.

DEEP BREATH is in active development for Windows PC. We're continuing to refine the underwater atmosphere, diving systems and interactions.

Follow our progress on YouTube, or say hello on Reddit.

Follow on YouTube Meet us on Reddit

Back above the surface Return to HighFly Studios