Murder Mystery Parties for Large Groups Cardiff
[Updated: November 2026]
For anyone asking how to host a murder mystery for a large group in Cardiff, our experience makes the answer simple. We have delivered thousands of large group murder mysteries using a tested structure designed for 60 to 120 people, 120 to 300, and 300 to 600 people, welcoming groups from Bristol, Birmingham and Nottingham.
Best murder mystery party game kits for a large group event in Cardiff
Caribbean Cruise
Intravenous Investigation
Christmas Capers
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Format:
Large Group Quick Guide
- Boxed murder mystery games for large groups delivered straight to your location in Cardiff
- Instant downloads
- Large groups and Mega groups
- Run in any venue
- Can be self hosted, or you can hire a presenter
- See our full list of murder mystery games here
- Large group "Premium Edition" games 31 to 60, 61 to 120 people
- Large group "Mega Edition" games 121 to 300 and 301 to 600 people
What is a large group murder mystery?
A large group murder mystery creates an energetic atmosphere where whole rooms of people participate together. Guests interact face to face, move between conversations, discover secrets, gather clues, and become active participants rather than simply watching entertainment.
Google Review
★★★★★ Doug Carlone - I recently bought a Hollywood Murder Mystery Party Game from Go Murder Mystery for my 50th birthday. What fun we had dressing up, pretending we were movie stars and putting our sleuthing skills to the test. Highly recommend this type of party for an entertaining evening.
Murder mystery games designed for large group events
Our best large group murder mystery games are built to adapt. Whether your numbers increase or guests cancel at the last minute, the game can scale quickly without complicated changes.
- The large group murder mystery party kit is built for effortless hosting.
- Simple materials and a comprehensive step-by-step run sheet make preparation straightforward.
- Our proven format has been tested to deliver consistently successful large group mysteries.
- No acting ability is necessary because the structure does the hard work.
- Follow the guide, start the investigation, and enjoy watching the mystery unfold.

Popular large group activities in Cardiff
Mega Edition Games for 120 to 300 People
Add mystery, laughter and high-energy interaction to your next conference in Cardiff with the best large group murder mystery games. Designed for 120 to 300 delegates, these Mega Edition games create an immersive experience that keeps the entire room engaged.
- The large group murder mystery game kit gives your host a clear roadmap for running the entire investigation
- One person can control the timing, announcements, clues and dramatic moments
- Easy-to-follow materials remove the stress of figuring out what happens next
- Employees become detectives, suspects and investigators as the story unfolds
- A thrilling corporate event format that keeps large groups moving, mingling and involved
Large Group Games for 60 to 120 People
Make your next corporate gathering in Cardiff unforgettable with our best large group murder mystery games for 60 to 120 people. Colleagues can step away from work, mingle freely, and enjoy an entertaining investigation together.
- Take the stress out of hosting with a complete large group murder mystery party kit.
- Everything needed for the investigation is supplied and ready to organise.
- Clear host guidance keeps every stage simple and easy to follow.
- Participants receive the information necessary to become part of the mystery.
- From the opening instructions to the final reveal, the essential materials are covered.
Large Group Murder Mystery Dinner
A large murder mystery dinner offers corporate groups in Cardiff an exciting shared challenge. As dinner progresses, colleagues can exchange clues, test theories, form alliances, and discover new information that changes the investigation.
- Host a large group murder mystery dinner wherever your event takes you.
- Work the investigation around your meal, with natural pauses between each course.
- Guests can eat, mingle, investigate, and exchange suspicious information throughout the evening.
- The structured format makes it easy to coordinate mystery rounds with restaurant or venue service.
- Turn an ordinary dinner into a lively evening of clues, characters, and intrigue.
Mega Edition Games for 300 to 600 People
Transform a packed AGM into a thrilling live investigation with the best large group murder mystery games in Cardiff. Our Mega Edition format is designed for 300 to 600 people, creating an extraordinary atmosphere where hundreds of guests become part of the show.
- Whatever the size of your event, our mystery game kit can create an exciting shared experience
- Designed to keep everyone involved whether you have a smaller gathering or hundreds of players
- Clear instructions make organising and running the mystery simple at any scale
- Players can mingle, investigate clues and become part of the action wherever they are seated
- From intimate events to enormous celebrations, there is no need to worry about group size
Customer Testimonial
We had a great time doing the game. I hosted the evening. I thought everything you provided was excellent. I had a good idea of what to do and how to do it with the information provided. Everyone enjoyed themselves and were so involved we did not take any photos sadly. It was the 80s theme and everyone dressed up which was great and really helped create the atmosphere. The clues were challenging without giving everything away and the team has already asked if we can do another one sometime. Thank you, we will order from you again in the future. Merrin Jack
Our Guarantee
- Full refund guarantee
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- Instant digital delivery
- Highly flexible game options
- Thousands of happy customers
Thanks to the spoiler-free format, the host can focus on having fun and solving the mystery rather than managing the game.
Small groups often enjoy the close interaction of a murder mystery, while larger groups benefit from the added variety of characters.
Delivery Options
You can access your games in 2 main formats:
- Boxed: Order a premium boxed edition and have it delivered to Cardiff within 7 to 10 Days.
- Downloadable: Instantly download your game and start preparing your event in minutes.
Why choose murder mystery large group events in Cardiff?
- A murder mystery game for a large group removes the pressure of performing or acting.
- Characters provide a fun excuse for guests to introduce themselves and break through social barriers.
- Interrogations, clue sharing, secret discussions, and accusations keep the whole room buzzing.
- Everyone has opportunities to interact without needing previous murder mystery experience.
- The investigation naturally brings people together through conversation, curiosity, and plenty of laughs.
How do I host a murder mystery large group event in Cardiff?
Learning how to play murder mystery with a large group in Cardiff is simple with our proven format. Follow these six straightforward steps to create an exciting, interactive whodunit.
- Choose your murder mystery – Select a theme suited to your large group and event.
- Choose your host – Follow our clear instructions and step-by-step run sheet to lead the investigation.
- Choose your venue – Bring your large group together at a suitable home, function space, workplace, or venue.
- Organise your guests – Assign characters and give everyone their information before the event.
- Prepare the room – Arrange your space so guests can easily move around, mingle, and interact.
- Start the investigation – Follow the run sheet, reveal the clues, encourage interaction, and solve the murder together.



Ready to plan your murderous large group event in Cardiff?
Choose one of our murder mystery games below and start planning an unforgettable large group experience for your guests.
Hollywood Scandal
Tracy Gang 1920s
Medieval Madness
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Format:
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Other locations we provide large group games:
- Murder Mystery Large Group Home
- Murder Mystery Large Group Leeds
- Murder Mystery Large Group Edinburgh
- Murder Mystery Large Group Manchester
- Murder Mystery Large Group Glasgow
- Murder Mystery Large Group Birmingham
- Murder Mystery Large Group Liverpool
- Murder Mystery Large Group Bristol
- Murder Mystery Large Group London
FAQ
What is a murder mystery game?
A murder mystery game is a set of materials designed to help a host run an interactive murder mystery experience. They typically include character profiles, clues, secret information, and instructions that guide players through a fictional crime. The materials may be physical or digital and participants use these materials to uncover evidence, interact with each other, and solve the mystery.
Do you need a host for a murder mystery party?
Our murder mystery games are designed to be self-hosted, meaning no professional host is required. The game materials guide the host step by step through the experience. However, you can choose to have a professional host if you prefer, allowing you to relax and enjoy the event while someone else manages the flow. An experienced host can also enhance the experience with their energy and experience.
What games work for very large groups?
For everyday large events, our Premium Edition Murder Mystery come standard for 60 to 120 people.
For very large events, our Mega Edition Murder Mystery games are a great option because they are designed for large groups and corporate events with 120 to 300 or 300 to 600 people.
Can your games handle 100+ guests?
Yes. Our Premium Edition and Virtual Edition games suit groups up to 120 people. Our Mega Edition murder mystery games are specifically designed for very large groups including corporate events and large parties of 120 to 300 and 300 to 600 people.
Can one person host and run a large group murder mystery?
Yes, I have done it myself hundreds of times. You may need helpers or assistants but only one person is required to run the show.
How do you keep everyone involved in a large group murder mystery?
The games are naturally engaging but there are a number of tricks of the trade.
- Guest work in teams or groups and never on their own.
- For groups larger than 80 people you really need them seated in teams at a table.
- For groups larger than 80 and especially larger than 120 you need a very large roving microphone.
How do you run a murder mystery for a large group?
You need one dedicated presenter to run the show. It is also a great idea to have 2 or 3 nominated helpers to run out materials etc.
How do guests know what they are supposed to do during the mystery?
For groups of 60 to 120 people, the presenter will guide the activity step by step.
In the Mega Edition games each team has a leader. The leader is supplied with clear instructions of what to do next and then they guide their team with the presenter's help.
How do you organise characters and clues for a large murder mystery?
With the characters you make sure you always have more than you need.
In the Mega Edition games each team receives clue packs that the team leader manages.
Can a large group murder mystery work in a conference or corporate event?
Absolutely and we have hundreds of happy clients to prove it. No more boring conferences it is time for murder!
How long does a large group murder mystery usually take?
2 to 3 hours.
Do people in Cardiff hold large group murder mystery events?
You are reading this so you tell me!