Echolot
prompt> make a runner in total darkness: you're a deep-sea probe, sonar lights up the cave, but predators swim toward the sound
This game is for desktop
It needs a keyboard and mouse, so it won't work on a phone. Open this page on a computer.
About the game
You are a small deep-sea probe in a pitch-black cave. Nothing is visible except your own faint glow.
A sonar pulse briefly reveals walls, rocks, wreckage, glowing spores and predators. Then the outlines slowly fade, and you keep swimming from memory. Every pulse drains energy and makes a sound, and predators swim toward it.
The goal is to dive as deep as you can and collect spores. Spores buy upgrades: pulse radius, energy, speed and how long the revealed map stays in memory. The deeper you go, the narrower the corridor and the more predators. A run lasts one to three minutes.
- Where to play
- desktop and phone
How to play
- On phone: drag your finger across the screen — the probe follows it. A short tap sends a sonar pulse.
- On desktop: WASD or arrow keys to move, space or click to pulse, Esc to pause.
- A pulse costs energy (the bar at the top left) and attracts predators.
- Collect glowing spores, avoid walls, rocks and anything that moves.
- Spend spores on upgrades between runs.
