Mogumo app iconMogumo

Walk the city. Solve the map.

Pick a route, walk to each real stop, and solve the puzzle there with friends or family.

Download on the App StoreDownload on the App Store
Routes screen: Asakusa: The Thunder Gate Letter and the next routes on a trailStop puzzle screen with four number wheelsMogu the mole waving

Turn your whole body

Work out a real landmark from the story, then hold the phone flat and turn until you face it. No arrow, no map pin, no hot or cold.

You get 3 tries, then the app shows you where it was.

NESWMogu the mole thinking, holding a compass
Mogu the mole walking with a compass and a satchel

9 routes in 9 places

TokyoSeoulKyotoGyeongjuBusanLondonParisNew YorkRome

Each route is 2 to 4 km, about 1 to 2 hours, with 6 or 7 outdoor stops you can visit at no cost.

Other cities are not in the app yet.

Far away? Play from home

Every route can be played from home. The compass puzzle becomes a map you turn by hand.

You earn a different stamp for it, so a walked stamp still means you were there.

Route detail screen with Continue walk and Play from home buttonsMogu the mole resting on a rock
Mogu the mole reading a letter

A torn letter from Mogu

Each stop gives you a piece of the letter, and one last question at the end.

Mogu is a made-up mole. The places and the history are real.

Good to know

  • Sources for every fact are listed in the app, with the date they were checked.
  • Routes were built from public sources and maps and were not field-walked by us, so a sign may have moved or a view may be blocked.
  • Watch where you walk, look up from the phone, and stay on public paths.

No account, no ads, no tracking

Your location stays on your iPhone.

Two routes included

Two routes, Tokyo Asakusa and Seoul Bukchon, are included. All Routes is an in-app purchase that unlocks the others, with Family Sharing.

PrivacySupportTerms of UseMap data (c) OpenStreetMap contributors(c) 2026 Huynh Xuan Sang