Echo Deep

You are a small anglerfish sinking into a trench that never ends.

You cannot see. Your light reaches only a few metres, and it is always fading. Tap and a sonar ping ripples out, and for one moment the walls, the urchins and the drifting jellyfish appear out of the black - then the dark closes again.

But every ping costs you light.

That is the whole game. Spend light to see, or fly blind and hope. Catch the glowing plankton to stay lit. Drag to steer, tap to ping, and go as deep as your nerve allows.

The trench narrows as you fall. It gets faster. It gets tighter. And somewhere down there is a number nobody has beaten yet.

HOW IT PLAYS
- Drag anywhere to steer as you sink
- Tap to fire a sonar ping and reveal what is ahead
- Catch plankton motes to refill your fading light
- Depth is your score, in metres

WHAT MAKES IT DIFFERENT
- Seeing is the resource. Information costs you survival.
- A hand-built darkness shader: your halo, expanding sonar wavefronts, and creatures that glow faintly through the black
- Every trench is generated fresh, and always passable
- One global leaderboard. No accounts, no ads, no tracking.

Free. No advertising. No in-app purchases.