Echo: Sonar Maze in the Dark

The screen is black. You can't see the walls — you can only hear them.

Echo is a maze game unlike any other: a game of sonar, sound, and nerve. Send out a
pulse and the walls around you light up for a heartbeat, then the dark takes them back.
Between pulses you swim blind, listening for the amber beacon that marks the way out —
and for the low hum of the hazards hunting you in the black.

HOW TO PLAY
• Drag anywhere to swim — no on-screen stick, just your thumb.
• Tap to send a sonar pulse. Walls glow, then fade over about two seconds.
• Follow the amber beacon to the exit and descend to the next depth.
• Red pulses are hazards, not the way out. You have three lives.

WHY PLAYERS LOVE IT
• A maze in total darkness — pure navigation by sound and light.
• Procedurally generated: every depth is a new maze, endlessly.
• Directional, distance-aware audio — you can hear where the exit is.
• Minimal, moody, one-handed — made for a quiet moment or a tense one.
• Four unlockable colour palettes: Sonar, Bioluminescence, Ember, Ultraviolet.
• No forced ads mid-dive. No banners. Watch a rewarded video only if you want to.

How deep can you go before the dark swallows you? Dive in.

Echo is a small, handcrafted game from sainilabs. Works offline. No accounts.