Three Mile Island — Uncover the Cover-Up
From14,90€

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Downtown Harrisburg and Susquehanna RiverbanksThree Mile Island — Uncover the Cover-Up
📍 Downtown Harrisburg and Susquehanna Riverbanks·🕐 5h – 8h·📍 ~40-60 km en voiture
🚗Roadtrip · Car needed
Also available as:HistoricalMysterySupernaturalSpy thriller

Three Mile Island — Uncover the Cover-Up

Decipher the hidden truth behind the 1979 nuclear meltdown. Track down suppressed evidence, operator logs, and eyewitness accounts to expose what authorities concealed.

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

Difficulty
·From age 14 years
Starting point :Pennsylvania State Capitol Complex

March 28, 1979: A valve jammed

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

Three Mile Island — Uncover the Cover-Up

🎭Your Mission

You are an investigative journalist, fresh off the train in Harrisburg, March 1979, determined to uncover the truth behind the Three Mile Island incident.

Your mission: interview witnesses, analyze documents

Uncover the hidden truth of Three Mile Island and explore the corners of Harrisburg, Pennsylvania, to solve a mystery that marked American nuclear history.

The story that haunts this land

Your investigation begins at the Pennsylvania State Capitol, a building that served as the nerve center for political decisions and official press releases for the State of Pennsylvania during the Three Mile Island crisis in March 1979. It was here that successive governors addressed citizens' concerns and managed communications surrounding the incident. As a journalist, you will search for traces of initial statements, press conferences, and government documents that attempted to reassure or inform the Harrisburg public about the actual situation at the nuclear power plant.

Continue to the State Museum of Pennsylvania, a place where the collective memory of Pennsylvania is preserved. Although not directly related to the 1979 incident, the museum offers insight into the historical and industrial context of the region, including exhibits on energy and technology that preceded the nuclear era. Here you will find information on Harrisburg's economic and social development that may have influenced public perception of technological risks, a key element in understanding reactions to the Three Mile Island incident.

Riverfront Park, along the Susquehanna River, offers a vantage point over the city and its surroundings. It was a place where Harrisburg residents came to relax, but also a gathering point where rumors and anxieties spread during times of crisis. You will visualize the distances and landscapes separating the city from the Three Mile Island plant, located about fifteen kilometers away. This park helps to grasp the scale of the event and its potential impact on the daily lives of citizens, heightening the tension of your investigation.

Your journey then takes you to the Dauphin County Courthouse. This building was the scene of many deliberations and perhaps complaints related to the consequences of the incident. In 1979, justice played a role in managing the repercussions, from investigations to potential compensation claims. You will search for judicial archives or testimonies that could reveal lesser-known aspects of the case, dissenting voices, or expert reports that did not make headlines at the time, all essential for your report.

Finally, your investigation concludes near Grace United Methodist Church, a place that, like many community institutions in Harrisburg, served as a spiritual and social refuge during the crisis. Fear and uncertainty drove many residents to seek comfort and reliable information. This journey will have allowed you to grasp the magnitude of the Three Mile Island event not only through technical facts but also through its human and social impact on the population of Pennsylvania, giving you a complete perspective for your final report.

1974
Three Mile Island power plant becomes operational.
1979
The Three Mile Island accident triggers a national crisis and a turning point for nuclear energy.
2019
Permanent closure of TMI Unit 1, marking the end of the plant's operation.

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

National Civil War Museumoptional
€12. Explore the causes, events, and consequences of the American Civil War through immersive exhibits in Harrisburg.
Optionnel
/pers.
Broad Street Marketoptional
Free entry. Discover the oldest continuously operating farmer's market in the United States, founded in 1860, and sample fresh local produce in Harrisburg.
Optionnel
/pers.
Hershey Gardensoptional
€18.50. Visit the beautiful botanical gardens created by Milton Hershey in 1937, a few miles from Harrisburg.
Optionnel
/pers.
City Islandoptional
Free entry. Enjoy a stroll on this island in the Susquehanna River, offering views of the Harrisburg skyline and recreational activities.
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
Pennsylvania State Capitol Complex
Directions on Google Maps
🕐
Duration
2h30 – 3h
At your own pace
👥
Players
Unlimited
From age 14
📍
Distance
~2.5 km
Downtown Harrisburg
Accessibility
Partial
Flat paths, some uneven sidewalks
🌐
Languages
17 languages
Built-in translation

Why this route?

⚛️

Nuclear Investigation

Dive into the heart of an accident that marked the history of energy and safety.

⏱️

Race Against Time

The fate of thousands of lives depended on the speed of the teams' deductions and decisions.

🗣️

Forgotten Testimonies

Uncover the voices of operators and officials facing the unknown, and the public's reactions.

Caution is the parent of safety.

Lessons from the past illuminate paths to the future.

★ 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

Uncover the hidden truth of Three Mile Island and explore the corners of Harrisburg, Pennsylvania, to solve a mystery that marked American nuclear history.

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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