Classified device · Temporal investigation

Prague remembers everything. Now you'll hear it too.

PragueEcho turns your phone into an Echo — a device that reads the echoes of the past written into the streets of Prague. Head into the city, sync the device with reality, and crack a case that played out long before you arrived.

How it works

iOS and Android · played in the streets of Prague

Premise · What it actually is

You're not holding a phone. You're holding an Echo.

Echo is a classified device for temporal investigation. It detects resonances left behind by events across time and reconstructs echoes of the past from them. You become the investigator — and Prague becomes your case.

  • Hear the past

    You catch the sounds of the street as they rang out centuries ago — right where you're standing.

  • Open a window in time

    In the right place, a long-forgotten scene opens up right in front of you.

  • Detect anomalies

    You find the spots where the boundary of time thins out — and something doesn't add up.

Process · How it works

Three steps and the past opens up.

This isn't a guided walk. It's an investigation — you lead it, step by step, right in the streets.

  1. 01

    You receive a signal

    Echo picks up a trace written into the city's resonances. The case begins.

  2. 02

    You head into Prague

    No tourist map. The atmosphere and the device guide you to a real location in the city.

  3. 03

    You sync with reality

    You stand in the right spot, aim, tune in — and the past opens up. You decipher, gather clues, go deeper.

Every clue you crack unlocks the next. You can't skip to the end — you have to truly understand it.

Echo's capabilities · What it can do

Six ways to read the past.

No technical specs. Just what you'll actually experience through the Echo.

  • CAP-01

    Hear the echoes

    Audio fragments of the past that play out right on the spot.

  • CAP-02

    See through time

    Windows into bygone scenes through your phone's camera and sensors.

  • CAP-03

    Scan reality

    Uncover what once stood here — and what has since vanished.

  • CAP-04

    Read anomalies

    Find the places where the boundary of time grows dangerously thin.

  • CAP-05

    Collect artefacts

    Objects that carry resonance and push the case forward.

  • CAP-06

    Investigation log

    Every clue is recorded and woven into the broader story.

Atmosphere · What it looks like

Flashes from the field.

Glimpses of what Echo picks up in the streets. This is the tone in which the city speaks to you.

  • Audio
    ECHO-LOG · 03:12Someone passed through here. You can still hear them.
  • Visual
    ECHO-LOG · 1389You're standing where it all began.
  • Anomaly
    ECHO-LOG · 14.42 NSomething is missing. And something doesn't belong.

First series · Defenestration

Three cases. One summer in 1419.

Defenestration is the first PragueEcho series — three interconnected cases in the streets of New Town. You can play the two base episodes in any order. Finish one of them and you unlock the finale, where all the clues converge at the windows of New Town Hall.

Series progress

Two episodes → finale. The series finale unlocks a deciphering artefact you receive at the end of a base episode.

Case 1 · Base episode

№ 1419-01

Prague 1419 · New Town

The Letter

A warning that never arrived.

A frightened man flees through a narrow lane in New Town and drops a sealed letter mid-run. Six hundred years later you can only make out a fragment of its echo. Track down who the letter was meant for — and find out if there's still time to stop what's coming.

≈ 75 min
Play time
2.6 km
On foot
Ages 12+
Recommended age
≈ 55 MB
Download size

Case 2 · Base episode

№ 1419-02

Prague 1419 · New Town

The Doctor

You saved a stranger. You have no idea why it matters.

In a narrow alley you unknowingly save an unknown man — all he leaves behind is an open journal. Four patients, one mystery, and time running short. Uncover the true cause before the sickness takes the whole city.

≈ 95 min
Play time
3.8 km
On foot
Ages 12+
Recommended age
≈ 70 MB
Download size

Series: Defenestration · Finale

Unlocks after completing one episode

Prague 1419 · New Town

The King

Who threw first?

All the clues converge at New Town Hall. The crowd seethes and the First Defenestration of Prague is about to happen. You've been hunting for the culprit all along — and the final question isn't “who was it?”, but “did I cause it myself?”.

≈ 85 min
Play time
2.2 km
On foot
Ages 15+
Recommended age
≈ 65 MB
Download size

Pricing · How to get the series

Choose how deep you go.

  • One episode

    CZK 999

    Pick one of the base episodes and start investigating.

  • Save CZK 700

    Finale + one episode

    CZK 1,298

    The finale can't be bought on its own — grab it together with one base episode.

  • Save 40%

    Full series

    CZK 1,798

    Both base episodes and the finale. The best way into the full Defenestration.

    Best value

Each episode costs CZK 999. Get the full series with a 40% discount — the finale cannot be purchased without at least one episode.

File · Frequently asked questions

Before you head out.

Yes — and that's the whole point. PragueEcho is played in the real streets of the city, not on your couch at home.

Not at all — you can solve the Echo perfectly well on your own. But groups work great too: one phone fits the whole crew and you head into it together.

Echo guides you with quick glances, not eyes-glued-to-the-screen-while-walking. Your safety comes first, always.

iOS or Android with standard sensors — GPS, camera, and compass. Nothing more to worry about.

Echo is in its final tuning and we're gearing up for launch. Leave us your email and we'll let you know the moment it's ready to download.

Ready to hear what Prague is hiding?

Your case is waiting

Take the Echo and head into Prague.

Headphones on, phone in hand. Echo will lead you into streets where something once happened — and it's waiting for you to be the one who cracks it.