Harbin — Echoes of the Forgotten
From14,90€

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Pingfang District and Harbin City Center.Harbin — Echoes of the Forgotten
📍 Pingfang District and Harbin City Center.·🕐 5h – 8h·📍 ~40-60 km en voiture
🚗Roadtrip · Car needed
Also available as:HistoricalMysterySpy thrillerSupernatural

Harbin — Echoes of the Forgotten

Uncover the silenced voices of Unit 731 victims. Decipher clues hidden across forgotten sites to expose the atrocities and recover lost testimonies before they vanish forever.

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

Difficulty
·From age 14 years
Starting point :In front of the Pingfang Peace Memorial.

In the frozen shadows of 1930s Harbin, Japan's secret Unit 731 conducted unimaginable horrors in Pingfang's labs—vivisections, plague experiments, and mass executions shrouded in secrecy

2–4
days at your pace
🚗
car · 5-30 km between sites

Harbin — Echoes of the Forgotten

🎭Your Mission

You are a special investigator for the International Historical Commission, tasked with documenting the hidden narratives of Harbin in the aftermath of the Second Sino-Japanese War, 1946.

Your mission begins in

Delve into the forgotten layers of Harbin, where the echoes of Russian and Japanese empires still resonate through the streets of this border city in Hokkaido.

The story that haunts this land

Your investigation begins at the Pingfang Peace Memorial, a site constructed in 1982 to commemorate the victims of Unit 731. This area, spanning 150,000 m², includes underground laboratory ruins discovered in 1984. It was here that over 3,000 Chinese, Korean, and Soviet prisoners were used as human guinea pigs in deadly experiments between 1936 and 1945. Open to the public since 1985, this museum documents the war crimes of the Japanese Army during the Second Sino-Japanese War, laying the groundwork for your exploration of the Unit 731 crime museum, an essential testament to Harbin's past.

Continue your immersion at the Museum of Evidence of War Crimes by Japanese Army Unit 731, established in 1985 on the actual site of the former Unit 731 in Pingfang District, Harbin. Led by Japanese military surgeon Shiro Ishii from 1936 to 1945, this complex initially covered 6 km² with over 150 buildings before its destruction in 1945. Exhibits include original artifacts like pathogen vials and photos of experiments on an estimated 250,000 victims, offering a stark perspective on this dark period in Hokkaido's history.

Your journey then takes you to Harbin Railway Station, built in 1903 by the Russians on the Sino-Russian (CER) line and rebuilt in 1906 after a fire. This main building, in Russian Byzantine style, covering 4,450 m², could accommodate 30,000 passengers daily. It was a crucial arrival point for Russian settlers fleeing the 1917 Revolution, which boosted Harbin's population to 200,000 by 1920. The station, renovated in 2010 for the city's 110th anniversary, symbolizes the lasting Russian influence on Harbin's architecture and demography, a UNESCO City of Urban Design 2016.

Exploring Zhaolin Park, created in 1902 under Russian influence as a public garden in Harbin's central Daoli district, you discover a different facet of local history. Spanning 9.8 hectares, it houses a statue of Lenin erected in 1955 and a music kiosk from 1906. This park was a site of historical gatherings during the Chinese Civil War (1946-1949). Renovated in 1997, it hosts local ice festivals every winter, showing Harbin's ability to transform its historical spaces into places of celebration and memory, linked to its Russian-Chinese historical heritage.

Your tour concludes in front of the Saint Sophia Cathedral in Harbin, built between 1907 and 1911 by the Russian Orthodox Church. The largest Orthodox church in China, with 721 m² of floor area and a central dome 53.35 meters high, it was closed in 1949 and used as a warehouse until 1997. Restored in 1997, it is now the Harbin Museum of Architecture and Art, illustrating Russian Orthodox architecture and the city's resilience. Your exploration of Harbin, a UNESCO City of Urban Design 2016, will have allowed you to retrace a complex past, from war crimes to cultural legacies, and understand how this Hokkaido city has preserved the echoes of the forgotten.

1945
The Soviet Army invades Manchuria, leading to the hasty destruction of Unit 731 facilities.
1949
The Khabarovsk trials conclude, convicting 12 members of Unit 731 for war crimes.
1984
The first public museum on Unit 731 opens in Harbin, marking a major step in the recognition of the crimes.

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

Pingfang Peace Memorialoptional
Free access. Explore the remnants of Unit 731's underground laboratories, discovered in 1984, for a deeper understanding of the war crimes.
Optionnel
/pers.
Museum of Evidence of War Crimes by Japanese Army Unit 731optional
Free access. Discover original artifacts and photos of experiments on an estimated 250,000 victims, established on the actual site of the former Unit 731.
Optionnel
/pers.
Northeast Chinese Cuisine Tastingoptional
Approx. price: 80-150 CNY. Savor the unique flavors of Harbin's local dishes, influenced by Russian cuisine and northeastern culinary traditions.
Optionnel
/pers.
Visit Zhaolin Parkoptional
Free access. Stroll through this public garden created in 1902 under Russian influence, a site of historical gatherings and host to winter ice festivals.
Optionnel
/pers.
Budget if you do them all / pers.~0

The Route

5-10 curated sites across the territory

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 · 14,90€

No calendar booking. Code sent immediately by email.

🔒 Secure payment · Code in 5 min · Free cancellation

Practical info

Starting point
In front of the Pingfang Peace Memorial.
Directions on Google Maps
🕐
Duration
2h – 2h30
At your own pace
👥
Players
Unlimited
From age 14
📍
Distance
~2.5 km
Pingfang and City Center
Accessibility
Full
Mostly flat and accessible route
🌐
Languages
17 languages
Built-in translation

Why this route?

🕊️

Quest for Truth

Gather evidence and testimonies to establish a chronology of atrocities and honor the memory of the victims.

🕯️

Educational Journey

Discover key sites from the dark history of Unit 731, transformed into places of memory and reflection.

⚖️

Restoration of Memory

Symbolically contribute to the restoration of collective memory by revealing a history that has too long been denied.

Their silence will never be in vain.

The light of truth illuminates the shadows of the past.

★ 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

Soyez le premier à partager votre expérience.

Did you play les echos des oublies? Check the email you received after your game to leave a verified review.

Your turn to play

Delve into the forgotten layers of Harbin, where the echoes of Russian and Japanese empires still resonate through the streets of this border city in Hokkaido.

14,90€
1 phone
28,60€
2 phones
41€
3 phones
52,20€
4 phones
62,10€
5 phones
69,50€
6 phones
77€
7 phones
84,40€
8 phones
91,90€
9 phones
99,30€
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 · 14,90€

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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