A self-guided crime investigation through Budapest's most iconic landmarks. Real locations. Real history. One killer to catch.
Follow the story to iconic Budapest locations. No app download needed – everything runs entirely in your mobile browser.
Photograph the scene. Watch the crime-scene image load. Search 3 zoomed locations for the key clue hidden within.
Watson, your AI detective partner, guides you if you're stuck. Catch the killer before the final scene.
Not just hints, but a real-time synthetic detective partner. Watson analyzes your findings, answers questions about the case, and adapts to your progress using advanced generative technology.
Upload a photo of the real location and watch it transform into a digitally enhanced crime scene. Zoom into microscopic details to find physical evidence invisible to the naked eye.
Your choices carry weight. The interrogations you conduct and the evidence you prioritize lead to multiple distinct endings. Will justice be served, or will the killer escape?
LOC: Buda Castle District // EST. TIME: 2-3 Hours // DIFFICULTY: Moderate
A prominent historian is found lifeless near the Matthias Church. He left behind a trail of cryptic clues scattered across the cobblestone streets of the Castle District. The local authorities have quickly dismissed it as a tragic accident, but the evidence suggests otherwise. It's up to your team to retrace his final steps through the ancient alleyways and hidden courtyards. Can you piece together the mystery and expose the truth before the killer vanishes forever into the shadows?
LOC: Városliget (City Park) // EST. TIME: 2.5 Hours // DIFFICULTY: Moderate
A renowned botanist disappears from the Vajdahunyad Castle grounds without a trace. Cryptic symbols are left carved into the ancient trees, pointing towards a forgotten society. The peaceful park has transformed into a sprawling labyrinth of secrets waiting to be uncovered. You must navigate through the thermal baths, whispering woods, and historical monuments to find her. Time is ticking as you delve deeper into a botanical conspiracy that threatens the city's green heart.
LOC: Váci Street // EST. TIME: 1.5 - 2 Hours // DIFFICULTY: Easy
Amidst the glittering storefronts of Váci Street, a high-profile jewel heist leaves the city in shock. The thief left a trail of breadcrumbs, blending perfectly into the bustling crowds and luxury displays. The local police are completely overwhelmed by the sheer audacity of the daylight robbery. You must act fast, interrogating virtual witnesses and examining digital crime scenes along the fashion district. Can you outsmart the syndicate and recover the stolen diamonds before they cross the border?
LOC: St. Stephen's Basilica // EST. TIME: 2 Hours // DIFFICULTY: Hard
The bells of St. Stephen's Basilica toll at midnight, but the ringer is mysteriously missing. A coded manuscript is discovered in the empty pews, pointing to an ancient conspiracy buried beneath the city's holiest site. Whispers of a secret brotherhood have echoed through these sacred halls for centuries. Your sharpest deductive skills are required to decipher the religious artifacts and hidden symbols. Step into the holy shadows and uncover a truth that some would kill to protect.
LOC: Kossuth Square // EST. TIME: 2.5 Hours // DIFFICULTY: Hard
Highly classified state secrets have been stolen from a secure vault beneath the Hungarian Parliament. The perimeter is locked down, meaning the thief is still hiding somewhere in Kossuth Square. National security hangs in the balance as you intercept coded messages and track suspicious movements. You will need to explore the monumental architecture and piece together a web of political espionage. Catch the traitor and secure the dossier before the secrets fall into the wrong hands.
"Tourists follow guides. Detectives follow clues. Experience Budapest like never before."
Ditch the crowded tour buses and boring guidebooks. Discover the city's hidden courtyards, iconic monuments, and secret alleys by stepping into a thrilling mystery. The streets are your game board.
Don't just visit the city—solve it.
No. Everything runs in your mobile browser. Just open the link and start.
Most teams complete a case in 90–150 minutes. You set your own pace.
One purchase covers your whole group. One phone is enough – or bring more for a better experience.
Currently available in English only. More languages coming soon.
Watson, your AI detective partner, is always available for hints. You can also request a full solution if needed.
Absolutely. Some detectives prefer it that way.
Last Updated: March 2026
This Privacy Policy explains how Borsos Zoltán E.V. ("we", "us", "Data Controller") collects, uses, and protects your personal data when you use https://thecitycase.com and play our digital investigation games, in strict compliance with the General Data Protection Regulation (GDPR) and Hungarian data protection laws.
Company Name: Borsos Zoltán E.V.
Registered Office: 3042 Palotás, Kossuth utca 40., Hungary
Registration Number: 59201564
Tax Number: 90063374-1-51
Email: info@thecitycase.com
We do not sell, rent, or trade your personal data. We only share data with trusted third parties strictly necessary to provide our services:
Your game progress is retained for 6 months after your purchase to ensure you have ample time to finish the case, after which it is automatically deleted or anonymized. Billing data and invoices must be retained for 8 years to comply with Hungarian accounting laws.
Under the GDPR, you have the right to access the personal data we hold about you, request the correction of inaccurate data, request deletion of your data (except where legally required to be kept), object to processing, or request data portability. To exercise any of these rights, please email us at info@thecitycase.com. You also have the right to lodge a complaint with the Hungarian National Authority for Data Protection and Freedom of Information (NAIH).
Last Updated: March 2026
Welcome to The City Case. By accessing our website (https://thecitycase.com) and purchasing our digital self-guided city investigation games ("Services"), you agree to be bound by these Terms of Service. Please read them carefully.
The Services are provided by Borsos Zoltán E.V. (hereinafter referred to as "Service Provider", "we", or "us").
Registered office: 3042 Palotás, Kossuth utca 40., Hungary
Tax number: 90063374-1-51
Registration number: 59201564
Email: info@thecitycase.com
The City Case offers digital, browser-based, self-guided investigation games played in real-world locations in Budapest. Upon successful payment, you receive access to a digital platform containing the game content, puzzles, narratives, and AI interactions. No physical items are shipped or provided.
All prices are clearly displayed on the website. Payments are processed securely via our third-party payment providers. By submitting your payment information, you authorize us to charge the applicable fees. A valid email address is required to receive the access link.
According to EU consumer protection laws (Directive 2011/83/EU), consumers generally have a 14-day right of withdrawal for online purchases. However, by purchasing and accessing our digital game, you expressly consent to the immediate performance of the contract and acknowledge that you thereby lose your right of withdrawal once you have logged in or accessed the game content. If you have purchased a game but have not yet clicked the start link or accessed the platform, you may request a full refund within 14 days of purchase by contacting us.
Our games require you to navigate the real, public streets of Budapest. By playing, you acknowledge and agree that:
All content included in the Services—including but not limited to texts, storylines, images, graphics, logos, audio, code, and AI prompts—is the exclusive intellectual property of Borsos Zoltán E.V. You may not reproduce, distribute, modify, reverse-engineer, or create derivative works from our content without explicit written permission.
These Terms are governed by the laws of Hungary. Any disputes arising from these Terms or your use of the Services will be subject to the exclusive jurisdiction of the competent Hungarian courts.
If you have any questions, require technical support, or need to reach out to the creator of The City Case, please don't hesitate to get in touch. We usually reply within 24 hours.
Email: info@thecitycase.com
Operator: Borsos Zoltán E.V.
Registered Office: 3042 Palotás, Kossuth utca 40., Hungary
Tax Number: 90063374-1-51
Registration Number: 59201564
"The truth is out there in the streets. We are just here to help you find it."