Kasumigaseki — Sarin Shadows 1995
Uncover Aum Shinrikyo's sarin plot that choked Tokyo's subways. Decode clues across Kasumigaseki stations to expose the cult's apocalyptic secrets before another strike.
📱 1 to 10 phones · 1 team per phone · Independent codes
March 20, 1995: At the peak of morning rush hour, members of the Aum Shinrikyo cult unleashed sarin gas on five Tokyo Metro trains converging on Kasumigaseki Station
Kasumigaseki — Sarin Shadows 1995
You are a state archivist at the National Archives of Japan, assigned in 1995 to document the unfolding tragedy of the sarin attack.
Your mission is to piece together the fragments of a
Delve into Tokyo's shadows and retrace the events that scarred Japan on March 20, 1995, in the heart of the Kasumigaseki district.
The story that haunts this land
Your investigation begins at Kasumigaseki Station, opened in 1938 on the Tokyo Metro Hibiya Line. It was here, at 8:00 AM on March 20, 1995, that the horror unfolded, making this station the main commemoration site for the sarin attack. A convergence point for the Hibiya, Chiyoda, and Marunouchi lines, Kasumigaseki is at the heart of Tokyo's government district. Less than 200 meters away, the National Police Agency Headquarters, built in 1989, was a symbolic target. Two days after the attack, it was from this building that police launched massive raids against Aum Shinrikyo, leading to the arrest of over a dozen cult leaders in May 1995.
The route then takes you towards the National Diet Building, seat of the Japanese Parliament, erected between 1920 and 1936. Located less than 500 meters from Kasumigaseki Station, this Neo-Renaissance edifice with its 65-meter high central dome has symbolized Japanese democracy since its opening in 1936. The 1995 attack, targeting trains passing through the Kasumigaseki and Nagatachō districts, explicitly aimed at government institutions. The Ministry of Finance Building, established in Kasumigaseki since 1949 and also a symbolic target, is in direct proximity to the attacked metro station, confirming the political nature of the attack.
Your itinerary leads you to Hibiya Park, one of Japan's oldest public parks, opened in 1903. Located less than 300 meters from Kasumigaseki, this 16.5-hectare park served as a vital gathering point for rescuers and survivors on March 20, 1995. The Hibiya Public Hall, a historic concert venue from 1913 within the park, hosted post-attack commemorations. This serene location offers a striking contrast to the panic that engulfed Tokyo that day, highlighting the city's resilience.
Continue towards Tokyo Station, one of Japan's largest railway stations, inaugurated in 1914. Although approximately 1 km from Kasumigaseki, this station, with its distinctive red brick facade designed by Tatsuno Kingo, received numerous injured from the attack and functioned as an emergency medical center. Initially, the five sarin attackers had aimed to converge on Tsukiji Station, opened in 1927 on the Hibiya Line. This station, about 1.2 km from Kasumigaseki, marks the southern end of the coordinated attack route and served the former Tsukiji fish market.
Finally, your journey concludes at Nihonbashi Bridge, a historic bridge rebuilt in stone in 1911. Located approximately 1.5 km from Kasumigaseki, Nihonbashi, meaning 'Bridge of Japan,' has marked the zero-kilometer point for Japanese roads since the Edo period. This bridge was a crucial crossing point for the injured and emergency services on March 20, 1995, along evacuation routes to Tokyo hospitals. This exploration of the Kanto capital's iconic sites offers a unique perspective on the Tokyo Metro Sarin Attack 1995, the impact of Aum Shinrikyo, and Terrorism in Japan, transforming your visit into a deep immersion into the Tokyo Historical Sites related to this Disaster Memorial Tourism.
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.
At each stop, places ordinary guides miss — secret façades, sculpted crests, alleys steeped in history.
Every riddle is rooted in a real historical fact or local legend. You leave with dozens of stories to tell.
Learn to read buildings — flamboyant Gothic, Baroque, Art Deco — like a real art historian, while having fun.
Walk through the city like a novel's character — every alley becomes a stage, every square a theatre.
A voice walks with you at every step, tells the story of each place, reads clues, adds a cinematic feel.
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?
Explore the city on foot solving puzzles based on real historical facts. No locked room — the city is your playground.
No app to download. Play directly from your browser. Guided step by step, at your own pace.
One purchase per phone is enough. Play with family, friends or as a couple — everyone participates.
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.
Stuck? Progressive personalised hints. The character repeats the puzzle on demand — at your own pace.
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
The Route
8 stages through the city
The gameplay: AR, camera, hidden clues
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.
How does it work with a group?
One phone = one team. Pick the number at checkout (1 to 10).
Solo, or a group sharing the screen. One team, one code.
Family, couple, or 2-3 teams competing. Each phone has its own code and its own score.
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.
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
Why this route?
Meticulous investigation
Track down subtle clues left by history to unravel a complex conspiracy.
Historical thriller
Immerse yourself in a pivotal event that shaped Japan, in an atmosphere of suspense and revelation.
Heart of Tokyo
Explore the central districts of the capital, silent witnesses to this dark period.
The truth lies beneath the surface.
Untangle the web of an apocalyptic cult that challenged Japan.
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.
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Your turn to play
Delve into Tokyo's shadows and retrace the events that scarred Japan on March 20, 1995, in the heart of the Kasumigaseki district.
1 purchase = 1 phone. Play several on the same device.
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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