Discover Liège while playing! Escape game – The Walter case

A bomb is hidden somewhere in Liège, and you have roughly two hours to find it. That is the hook of The Walter Case, a city escape game that turns ordinary streets into an open-air police investigation. You use a mobile app, follow clues, make choices, and search the city with your own small group.

I like two things right away: the route is not just a sightseeing walk, and the price is charged per group of up to six, making it good value for families or friends. The story sends you after suspects and locations instead of simply pointing out monuments, while your choices shape how the case unfolds.

The main drawback is practical rather than dramatic: you need your own smartphone, and the game can use plenty of battery. Bring a charger or power bank for each person if possible. One recent player found this important enough to mention directly, and it is sensible advice.

Key points at a glance

• A bomb-countdown mystery: Investigate blackmail involving a billionaire CEO before the device explodes.
• A Liège walking game: Start at Montagne de Bueren and explore the city through clues, searches, and missions.
• Your choices matter: Select the route, suspects, and places to investigate through the mobile application.
• Private group format: Only your party takes part, with up to six people covered by the listed group price.
• Allow about two and a half hours: The game is designed as a substantial city activity, not a quick puzzle stop.
• Bring charged phones: Smartphones and battery power are not supplied, so prepare before you begin.

A detective case on Liège’s streets

The Walter Case begins with what sounds like a routine blackmail investigation involving a billionaire CEO. Then the case turns urgent. A bomb is hidden in Liège, the clock is running, and your team is the only one with enough leads to act.

That setup gives the walk a clear purpose. You are not simply moving from one sightseeing point to another. You are playing a private detective, collecting information and deciding what deserves attention next. The app guides the experience, but you still need to look closely at the city around you.

This matters because the streets become part of the puzzle. Details in your surroundings may help you solve missions or choose your next move. I like this format for visitors who want a reason to walk beyond the usual photo stops. It also gives children and teenagers a role, since the group must work together rather than listen quietly to a guide.

The story changes according to your decisions. You choose which route to follow, which suspects to question, and which places to search. I would not expect a fixed, stop-by-stop tour with one pre-set script. The appeal comes from making choices as a team and seeing where those choices lead.

Starting at Montagne de Bueren

Your meeting point is Montagne de Bueren 20, 4000 Liège. The activity finishes back at the meeting point, so you begin and end in the same general location.

The starting point gives you a useful anchor in the city. You will want to arrive with your group together, your phone charged, and the app ready to use. Since this is a self-guided game rather than a guide-led departure, you should not count on someone handing you equipment or explaining the city in person.

From the start, the experience asks you to combine movement with problem-solving. The exact route may depend on your decisions, so you should stay alert rather than assume that every group will take the same path. That open structure is a strength if you enjoy freedom. It can be less appealing if you prefer a guide who keeps everyone moving along a fixed plan.

The game is available from noon until 11:30 p.m. every day during the stated operating period, which runs through June 21, 2026. The listing gives the opening time as 12:00 a.m., but the activity information also presents the operating window as 12:00 p.m. to 11:30 p.m. Because of that mismatch, I would confirm your chosen start time when booking. In practical terms, the supplied hours indicate broad daily availability, including evening play.

How the investigation works

The mobile application is your guide, game master, and case file. It provides the clues and missions, then sends you into Liège to find the information needed to continue.

You will need to pay attention to the built environment. The instructions specifically encourage you to study your surroundings, so this is not a game you can play while staring only at the screen. One person can read the instructions while the rest of the group checks nearby details, compares ideas, and looks for useful clues.

The case includes several types of decisions:

• You decide which route to take.
• You choose which suspects to question.
• You select places to search.
• You solve puzzles and complete missions.
• You use the city itself to help confirm your answers.

That structure gives the activity a different feel from a standard escape room. You are not locked in a room with a fixed series of puzzles. You have Liège around you, and the route can respond to your choices. The tradeoff is that the quality of your experience depends partly on how well your group communicates and manages the clues.

The two-hour story clock adds pressure, but the complete activity lasts about two and a half hours. That extra time allows for walking, reading instructions, discussing choices, and handling the practical pace of a city game. Do not schedule a tight museum booking immediately afterward. You will want a little breathing room.

Seeing Liège through a game

The best sightseeing benefit here is not a list of landmarks. It is the way the game gives you a reason to notice the city.

A normal walk can turn into a blur of streets, facades, signs, and corners. A puzzle changes your attention. You may find yourself checking details you would otherwise pass without a second glance. The missions encourage you to connect the story with the places around you, which can make the walk feel more active and personal.

The route is also described as not overly physical. That is useful for groups with mixed energy levels. You should still expect to walk around central Liège for a substantial period, but the experience is not presented as a strenuous outdoor challenge. I would call it a moderate city outing, with the exact effort depending on the route your team chooses and how quickly you solve the tasks.

Because the route develops through decisions, I would not book this if your main goal is a formal introduction to Liège’s architecture or history. The city is the setting and the clue source, not the subject of a traditional guided lecture. For that, you would need a separate sightseeing tour. Here, the main reward is the investigation.

What the private format means

The game is private, so only your group participates. That is a real advantage for families, couples, and groups of friends who do not want to solve puzzles in front of strangers.

A private format also lets you set your own rhythm. You can pause to discuss a clue, let different people take the lead, or give younger players time to work something out. You are not competing for space with another party or waiting for strangers to finish a puzzle.

The listed price is $23.16 per group of up to six people. That is not a per-person rate. For a full group, the cost works out to less than four dollars per person before any currency changes or booking charges, which is strong value for an activity lasting about two and a half hours. Even a smaller group may find it reasonable if you prefer a private activity with a story and a city walk built in.

The low group price does come with a few limits. The app, phone, and battery are your responsibility. Food and drinks are also not included. You may want to eat beforehand or plan a break around the game, but do not assume refreshments are part of the experience.

The phone and battery issue

This is the practical point most likely to affect your day. You need a smartphone to play, and neither the phone nor a battery is supplied.

The game may require you to use the phone for instructions, clues, navigation within the activity, and the end-of-game summary. A player specifically advised bringing a phone for each person and an external charger because the battery can drain quickly. I would follow that advice, especially if you are already using your phone for maps, photos, translation, or other city plans.

Before starting, I would do four simple things:

• Charge every phone fully.
• Bring a power bank and cable if you have one.
• Make sure everyone knows which phone will run the main game.
• Keep at least one backup phone available for group discussions or photos.

You do not necessarily need every person to run the app, but having more than one charged phone gives you a safety margin. It also lets the group split up briefly to check clues, if the instructions call for it, without leaving one person responsible for the entire case.

Who will enjoy The Walter Case most

I see this working best for groups that enjoy solving problems together. Families with older children, friend groups, couples, and small private parties can all fit the format, provided everyone is willing to walk and use a phone.

It is especially suitable if you have already seen some of Liège and want a different way to spend an afternoon or evening. The game gives you an activity with a clear plot, while the city supplies the setting and clues.

You may also like it if your group has mixed interests. One person can focus on the story, another on visual details, and another on route choices. The game does not require everyone to be a puzzle expert. It rewards discussion and observation.

I would think twice if you dislike app-led activities, want a detailed historical commentary, or prefer a relaxed walk with no deadline. The bomb countdown is part of the fun, but it can make the experience feel less restful. Groups that argue over every decision may also lose time and enjoyment.

Most people can participate, and service animals are allowed. The start is near public transportation, which makes it easier to reach without arranging a special transfer. The supplied information does not give detailed route or terrain specifications, so anyone with particular mobility needs should confirm those points before booking.

Timing, booking, and cancellation

You can book the game for any day shown in the operating period, with times listed from midday or midnight through 11:30 p.m. Because the published opening time is inconsistent, I would check the exact time at checkout or contact the provider, Coddy, before setting your plans around it.

Confirmation is received when you book. Coddy also provides 24/7 online support, which is useful for an app-based activity if you have trouble getting started or need help during the game.

You can cancel for a full refund up to 24 hours before the local start time. Cancellations or changes made within 24 hours are not accepted for a refund. That policy is fairly flexible if you make your plans early, but it gives you little protection against a last-minute change.

The game remains valid for up to three years. That is unusually generous for a city activity and may help if your plans shift. Still, you should check the date and operating period when you finally decide to play.

The final adventure summary

At the end, you receive a summary of your adventure with photos. This gives the activity a proper finish instead of ending the moment you solve the last task.

The summary is also useful for a group outing. You can look back at the choices you made, keep a record of the case, and share the result with friends who were not there. Do not expect a professional photo shoot. The supplied information describes a summary with photos, not a dedicated photographer or a gallery of posed portraits.

I like this small closing touch because city games can otherwise feel temporary. You spend time walking, solving, and making decisions, then leave with something that records the experience.

Should you book The Walter Case?

I would book The Walter Case if you want an affordable, private way to explore Liège while doing more than follow a guide. The strongest reasons are the flexible route, the private group setup, the story-driven missions, and the very low group price for up to six people.

Prepare properly. Bring charged smartphones, a power bank, comfortable walking shoes, and enough time to let the game finish without rushing. Remember that food, drinks, and devices are not included.

Skip it if you want a traditional historical tour or a fully guided experience. Choose it if your group enjoys clues, choices, and a little pressure. With free cancellation until 24 hours before the start and validity for up to three years, it is also a fairly easy activity to fit into a Liège visit.

FAQ

Where does The Walter Case start?

The game starts at Montagne de Bueren 20, 4000 Liège, Belgium.

Where does the activity finish?

The activity ends back at the meeting point.

How long does the game take?

The approximate duration is two hours and 30 minutes.

How many people can join one group?

The listed price covers a private group of up to six people.

Do I need a smartphone?

Yes. The game is guided through a mobile application, and you must provide your own smartphone and battery power.

Is food or drink included?

No. Food and drinks are not included in the activity.

Can I cancel for a refund?

Yes. You can receive a full refund if you cancel at least 24 hours before the local start time. Cancellations or changes within 24 hours are not refunded or accepted.