Ichigaya Conspiracy — Decode MacArthur's Occupation Secrets
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Ichigaya, Tokyo, JapanIchigaya Conspiracy — Decode MacArthur's Occupation Secrets
📍 Ichigaya, Tokyo, Japan·🕐 2h30 – 3h·📍 ~3 km
Also available as:HistoricalMysterySpy thrillerCinema

Ichigaya Conspiracy — Decode MacArthur's Occupation Secrets

Uncover the hidden agenda behind Japan's postwar transformation. Decipher classified documents, expose political conspiracies, and reveal what MacArthur truly orchestrated during the Allied occupation.

📱 1 to 10 phones · 1 team per phone · Independent codes

Difficulty
·From age 14 years
Starting point :Imperial Palace Outer Garden (Kokyo Gaien)

September 1945: General Douglas MacArthur arrives in Tokyo as Supreme Commander of the Allied Powers

8
stages
~3 km
route
2h30 – 3h
at your pace
🚶
walking

Ichigaya Conspiracy — Decode MacArthur's Occupation Secrets

🎭Your Mission

You are a GHQ (SCAP) archivist on a secret mission in post-war Tokyo, tasked with deciphering its hidden remnants.

Your ~165-minute journey spanning

Dive into the heart of Tokyo's Allied occupation, where General MacArthur reshaped Japan's destiny.

The story that haunts this land

Your investigation in Tokyo begins at the Kokyo Gaien National Garden, a vast 115-hectare area surrounding the Imperial Palace's outer moat. Here, facing the Double Bridge (Nijubashi) built between 1888 and 1891 with granite foundations from Koishikawa, stands the Statue of Kusunoki Masashige. Erected in 1900 and unveiled on November 17, 1900, by the Ministry of the Army, this 8-meter-tall bronze figure commemorates the 14th-century samurai loyalist (1294-1336). The statue, 5 meters high on a 3-meter pedestal, depicts Kusunoki on horseback, facing the Imperial Palace as a guardian symbol. Temporarily relocated during WWII air raids, it embodies the nation's resilience in the face of challenges.

Continuing your journey in the Kanto region, you arrive at the Dai-ichi Seimei Hall, an Important Cultural Property Japan. Built in 1934 as the headquarters of Dai-ichi Mutual Life Insurance, this Art Deco building, designed by Toda Takeshi, survived the 1923 Great Kanto Earthquake. Its distinctive architecture, with a 71-meter frontage and 26-meter depth over 4 stories, was the scene of a decisive chapter in Japanese history. Between 1945 and 1952, it served as the GHQ (SCAP) officers' dormitory and press club under General MacArthur's authority, becoming an iconic site of the Tokyo Occupation.

Your path then leads to the National Diet Building, whose construction began in 1928 and was completed in 1936. With its 65-meter-high central tower, designed by Watanabe Katsusaburo, this edifice hosted the first session of the National Diet on November 26, 1936. Having withstood WWII bombings, it was a key location during the Occupation (1945-1952), where preparations for the San Francisco Peace Treaty took place under MacArthur's supervision, marking a major transitional period for Japan and its heritage. This monument is a pillar of Kanto's heritage and a historic site in Tokyo.

The circuit takes you to the Japan Supreme Court Building, a structure completed in 1981 after a design competition won in 1972. This 6-story building, with a 140-meter frontage, features 20 Corinthian columns, each 18 meters high, inspired by classical architecture. It replaced the pre-war court damaged in WWII and symbolizes post-Occupation judicial independence, established after the 1947 Constitution. This site highlights the refoundation of the Japanese legal system, a crucial step in the history of Tokyo and Kanto.

Your exploration concludes at the Chidorigafuchi National Cemetery, established in 1959 as a repository for the remains of 359,997 unidentified Japanese WWII war dead. This cemetery, covering 0.9 hectares, features a 51,000m² moat tunnel leading to an ossuary hall opened in 1963. Since then, an annual memorial service has been attended by the Emperor, near Ichigaya where key decisions on demilitarization occurred during the Occupation. This journey will have allowed you to grasp the extent of Japan's reconstruction, from MacArthur's initial decisions to the establishment of a new national identity, making this visit to Tokyo a true immersion in its complex history.

1945
Japan's surrender and the beginning of Allied occupation.
1946
MacArthur's GHQ presents its draft constitution.
1947
The new Constitution of Japan comes into effect.
Far more than an escape game

A game, a guided tour and a heritage guide — all in one

You're not just buying an escape game. You're carrying a living guide — historical anecdotes, forgotten legends, key monuments, hidden architecture — unfolding as you go.

🏛️
Hidden historical gems

At each stop, places ordinary guides miss — secret façades, sculpted crests, alleys steeped in history.

📜
Anecdotes & legends

Every riddle is rooted in a real historical fact or local legend. You leave with dozens of stories to tell.

🏗️
Architecture & heritage

Learn to read buildings — flamboyant Gothic, Baroque, Art Deco — like a real art historian, while having fun.

🚶‍♀️
Immersive wandering

Walk through the city like a novel's character — every alley becomes a stage, every square a theatre.

🎙️
Immersive audio narration

A voice walks with you at every step, tells the story of each place, reads clues, adds a cinematic feel.

📲
Yours forever

Keep access to the guide & game for 1 year. Come back any time, share it with friends.

« You will not leave this city the way you entered it. »

How does it work?

🏛️
Outdoor escape game

Explore the city on foot solving puzzles based on real historical facts. No locked room — the city is your playground.

📱
On your smartphone

No app to download. Play directly from your browser. Guided step by step, at your own pace.

👨‍👩‍👧‍👦
Unlimited players

One purchase per phone is enough. Play with family, friends or as a couple — everyone participates.

🎯
Augmented reality

Point your phone at the façade: a historical character appears and speaks to you in your language. Golden letters magically write themselves on the wall to reveal the puzzle answer.

🤖
AI that helps you

Stuck? Progressive personalised hints. The character repeats the puzzle on demand — at your own pace.

🗣️
32 languages

French, English, German, Spanish, Italian + 27 other languages auto-translated by AI.

🎟️

Want to go deeper?

Places tied to your adventure — optional entries, totally up to you · per person

Tokyo National Museumoptional
¥1000. Explore the largest collection of Japanese art and artifacts within Ueno Park, a key cultural site in Tokyo.
Optionnel
/pers.
East Garden of the Imperial Palaceoptional
Free. Visit the remains of Edo Castle and the landscaped gardens, accessible to the public on a part of the imperial domain in Tokyo.
Optionnel
/pers.
Ramen tasting in Ichigayaoptional
¥1000-1500. Savor authentic ramen at one of the many local restaurants in the Ichigaya district, near the historic sites of Kanto.
Optionnel
/pers.
Sumida River Cruiseoptional
¥1500-2000. Admire Tokyo's landmarks from the water, offering a different perspective on urban landscapes and historic bridges.
Optionnel
/pers.
Budget if you do them all / pers.~0

The Route

8 stages through the city

The gameplay: AR, camera, hidden clues

📱Search clues with your cameraRA

At each stop, open your phone camera: an augmented reality character appears on the façade and speaks your language. Hunt the clue — it materializes as golden letters on the real wall or floats in front of you. When you find it, the phone vibrates, an AR chest opens and reveals your answer fragment. 8 stops, 8 clues to find with the camera, 1 final code.

🎭

The stops on your route are a surprise. You'll discover them one by one, guided by your phone, starting from the meeting point.

8
original puzzles
24
min of narration
🪙 24
TripCoins granted
16
GPS waypoints

How does it work with a group?

One phone = one team. Pick the number at checkout (1 to 10).

🧍
1 phone

Solo, or a group sharing the screen. One team, one code.

👥
2-3 phones

Family, couple, or 2-3 teams competing. Each phone has its own code and its own score.

👨‍👩‍👧‍👦
4 to 10 phones

Friends, bachelor/bachelorette, small office outing — each their own code, each plays at their own pace. Tiered pricing then €6 flat per phone from the 6th.

  • All codes are independent — play at the same time OR separately, each team advances at its own pace.
  • Leaderboard between your teams + global game leaderboard — each score appears in the public ranking.
  • More than 10 phones or need a personalized quest? Discover custom tours.
🕒No date to pick · Code valid 1 year · Play whenever you want

Ready to live this adventure?

Get my code · 12€

No calendar booking. Code sent immediately by email.

🔒 Secure payment · Code in 5 min · Free cancellation

Practical info

Starting point
Imperial Palace Outer Garden (Kokyo Gaien)
Directions on Google Maps
🕐
Duration
2h30 – 3h
At your own pace
👥
Players
Unlimited
From age 14
📍
Distance
~3 km
Central Tokyo
Accessibility
Partial
Some stairs or uneven sidewalks
🌐
Languages
17 languages
Built-in translation

Why this route?

📜

Secret Constitution

Uncover the secrets of a constitution drafted in record time, under American pressure.

🏛️

Occupation Legacy

Explore key locations in Tokyo where Japan's future was reshaped by Allied forces.

🕵️‍♂️

Historical Investigation

Track the footsteps of General MacArthur and his influence on the reconstruction of a nation.

Democracy imposed, future chosen?

Japan, between tradition and a new era.

★ Innovation 2026

9 features nobody else has

OddballTrip combines gamified play, augmented reality and AI. All our competitors deliver 1 or 2 of these angles. We deliver all 5.

🎁

AR treasure chest

A golden chest floats in front of the monument. Tap → opening animation → reveals a secret message.

🧙

AR narrator character

Point your phone at the façade: a knight, witch, monk, sailor, detective or ghost appears full-screen and speaks to you in your language with their dedicated ElevenLabs voice (each character has their own unique voice) — your living guide.

📜

Magic golden letters

At the puzzle climax, golden letters magically write themselves on the real wall — that's the puzzle answer. An unforgettable visual effect.

🎧

Written + audio narration

Every puzzle available as text AND voice-over: read at your own pace or listen eyes-free while walking. Great in groups and for accessibility.

🧭

360° radar + vibration

A mini-radar shows the target even behind you, and the phone vibrates when you aim in the right direction.

📸

Heritage storytelling

Every puzzle weaves in real historical facts (architecture, era, anecdotes). You learn by playing — like a gamified audioguide.

🤖

Progressive AI hints

3 levels of AI-generated help: vibe → where to look → answer format. You're never stuck.

🤳

AR selfie memento

At the end of the game, capture a selfie with OddballTrip banner + mascot, shareable on Instagram, TikTok.

📱

Zero app to install

PWA technology: open the link, it plays in your browser. Same quality as an app, no App Store hassle.

Frequently asked questions

Q01Do I need to download an app?

No, never. You get a link, you click, it plays in your browser. That's the point of a PWA: same as an app, without the hassle.

Q02Does it work offline?

GPS yes (handled by your phone). Maps yes (tiles cached). AI and hints need an intermittent 4G connection.

Q03How long does a game take?

1 h 30 to 2 h 30 depending on your pace. The timer runs but only for the leaderboard — you play at your own tempo.

Q04What happens if I'm stuck?

You get 3 levels of hints per puzzle (increasing penalty). If truly stuck, you can skip the step (45-min penalty but you keep going).

Q05What's the age range?

From 12 without an adult, from 6 with an adult reading puzzles. Works for families, couples, friend groups, companies.

Q06What if my city isn't in the catalogue?

Pre-register or contact us — we'll email you as soon as your city is live.

Q07What is augmented reality exactly?

Point your phone at the façade: a historical character appears full-screen and speaks to you in your language. At the puzzle climax, golden letters magically write themselves on the real wall — that's your answer. After each puzzle solved, a treasure chest floats in front of you. Seeing is believing.

Avis des aventuriers

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Your turn to play

Dive into the heart of Tokyo's Allied occupation, where General MacArthur reshaped Japan's destiny.

12€
1 phone
23€
2 phones
33€
3 phones
42€
4 phones
50€
5 phones
56€
6 phones
62€
7 phones
68€
8 phones
74€
9 phones
80€
10 phones

1 purchase = 1 phone. Play several on the same device.

🕒No date to pick · Code valid 1 year · Play whenever you want
Get my code · 12€

No calendar booking. Code sent immediately by email.

🔒Secure payment · Code in 5 min · Free cancellation

🪙+24 TripCoins granted with your booking

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