// audio-only proximity search
Invisible Sound Hunt
Three targets are hidden somewhere in a square you can never see into. Move around and listen: a live synthesized tone rises in pitch and volume as you close in, and leans left or right toward whichever way the target sits. Find all three by ear, get a time. That's the whole toy.
Accessibility note
🎧 Before you start
This room is a stereo-audio wayfinding task. Pitch, volume, and left/right pan in a synthesized tone are the only guidance to each hidden target. If you can't hear directional audio — no sound, mono playback or a single earbud, or hearing loss that removes stereo cues — this hunt will not be fairly playable, and there is no visual substitute for it. That's a real limit of the room, stated plainly, not an oversight.
Sound hunt
Drag with a mouse or finger inside the square, or press the square then use the arrow keys, to move your position. There's no map — find all three by ear.
Web Audio isn't available in this browser, so this room can't run its hunt here.
Drag inside the square, or focus it and use the arrow keys.
Audio stopped because the tab lost focus. Your progress in this hunt is still here.
Hunt complete
0:00.0
New best time.
How this actually works
- Each hunt hides 3 targets, one at a time, at random spots inside the square. Nothing marks where they are — not before you find one, not after, apart from a small dot left behind once you do.
- A synthesized tone plays the whole time you're hunting. Its pitch and volume climb as you get closer to the current target, and its stereo pan leans toward whichever side the target is on. That tone is the only clue you get.
- Mouse or touch: drag anywhere inside the square. Keyboard: press the square to focus it, then use the arrow keys.
- This is a stereo-audio task by design. If you can't hear directional audio, this hunt is not fairly playable — there is no visual stand-in for the tone, on purpose.
- Leaving the tab or switching apps stops the sound outright rather than let it play in the background; come back and press resume. Muting just silences it in place without losing your run.
- Your best completion time and total hunts finished are kept in this browser, under one storage key,
sandbag.soundhunt.v1. Nothing is ever sent anywhere.
Invisible Sound Hunt is a hot-and-cold game played entirely by ear, synthesized live in this tab. No files, no map, no server. · The Sandbag