ECHOLIGHT: Sonar Cave

Tap to send a sonar ping. Walls glow where the echo lands, but every sound can wake the shades sleeping in the dark.

ECHOLIGHT is a stealth exploration game played in total darkness.

You are a small spark of light lost in a cave. You cannot see the walls until you make a sound. Tap the screen and a sonar ping ripples outward; wherever the echo touches stone, the cave glows for a moment, then fades back to black.

But sound travels both ways. Shades sleep in the hollows, and a ping that reaches them wakes them up. Every tap is a choice: light up the way ahead, or stay silent and slip past.

• SEE WITH SOUND: pings reveal walls, pearls and the violet crystal exit, but only where the echo can actually reach • LISTEN: with headphones, echoes arrive from the left or the right, so you can hear an opening before you see it • SNEAK: an awake shade hunts you for seven seconds, then falls asleep again. Hide, wait, choose your moment • 60 CAVES across five regions, from the Shallow Hollows to the Silent Floor, each deeper and busier than the last • THREE STARS: reach the exit, collect all three pearls, and finish without being caught • Pings recharge slowly, and you can hold up to three • Every sound is synthesized live, with subtle haptics for pings, bumps and danger • A full map of every cave you have explored glows faintly as you go • Korean and English

No ads. No in-app purchases. No account. No tracking. Your progress stays on your device.