Step into Moriarty's invitation: a 3–4 hour interactive puzzle walk across Marylebone where texts, phone calls and tactile challenges lead teams toward a hidden safehouse. Expect literary landmarks, pub breaks and brain-teasing choices that alter the story.
More ways to explore the area's outdoor wonders
You begin on a cool London pavement, phone in hand and the city's low hum pressing at the edges of your attention. Narrow streets and Georgian facades of Marylebone become the gameboard as text messages arrive, and a voice on the line dares you to outsmart a criminal genius.
Difficulty
easy
Duration
3–4 hours
Fitness Level
Suitable for anyone able to walk continuously for a few hours and stand during puzzle-solving; casual fitness recommended.
Wildlife
History
The game riffs on Arthur Conan Doyle's world; Marylebone and nearby Baker Street are historically linked to the Sherlock Holmes stories and Victorian London life.
Conservation
Walking games have a low environmental footprint—stick to public paths, respect private property and use reusable water bottles to minimize waste.
Reserve your spot on the Moriarty's Game: The Professor's Invitation by HiddenCity today and enjoy a trusted, highly rated experience designed to help you make the most of your adventure.
Bring a charged smartphone
A UK, US or CA mobile number is required and the game runs via text/phone interactions—carry a fully charged device and a portable battery.
Wear comfortable footwear
The route involves several hours of walking on pavement and occasional steps—supportive shoes reduce fatigue and keep you moving through puzzles.
Plan for pauses
Use the built-in café and pub break points to rest and refocus—hydration and small snacks help teams think clearly during sequences of puzzles.
Check public transport options
Start and end points are close to Tube and bus stops—having an Oyster card or travel app speeds arrival and departure.
Fully charged smartphone
Needed for text prompts, calls and game progression; include local number if possible.
Portable battery pack
Extends device life for longer games and photo-taking.
Comfortable walking shoes
Provides support across pavement, steps and variable urban surfaces.
Light rain jacket
Keeps you dry during unexpected showers common in London springs (also useful in fall).
spring