You are lost in absolute darkness. The walls are invisible. Your only
instrument is sound — release a pulse and watch the echo paint the
world for a single fading second.
WASD / ↑←↓→Feel your way through the passages.
space / clickEmit a sonar pulse. Walls glow, then darkness returns.
the beaconSomewhere ahead an amber exit waits. Reach it to descend.
echo located — exit reached
level complete
moves taken
0
pulses spent
0
The corridor opens beneath you. The dark below is deeper still.