Casino and Vegas murder mystery party game: Murder in Sin City Murder Mystery Party Game

On the neon-lit Las Vegas Strip, The Paramount Casino hosts a high-stakes night where high rollers, celebrities, and power players gather for an unforgettable spectacle. Amid spinning roulette wheels, flashing lights, and endless wagers, the city’s glamour hides a darker undercurrent of secrets and ambition.

When a guest is murdered, the casino floor turns deadly. Was it the ruthless politician, the envious showgirl, or the charming cocktail waitress with hidden motives? Step into this casino and Vegas murder mystery party game, unravel the lies behind the luxury, and solve the crime before the house wins again.

Want a sneak peek? Download our intro file to learn more about this mystery game!
Download Intro File
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An instant-download murder mystery game kit that gives you everything you need to host an unforgettable, laugh-filled murder mystery party. No experience required!

Host Guide: Easy, step-by-step instructions to run the show like a pro.
Character Sheets: Juicy secrets, wild motives, and unique roles for every guest.
Game Materials: Clues, evidence, and everything to solve the case.
Party Extras: Printable decor, props, and other materials to really wow your guests.

Setting the Scene

What happens in Vegas, stays in Vegas!

As the largest and most extravagant casino on the Las Vegas strip, The Paramount Casino is throwing a party of epic proportions. With the highest rollers and the gutsiest gamblers, the stakes are going to be high and there is no limit to what could happen.

Everyone who is anyone in Vegas is sure to be in attendance for this grand event. From the powerful politician to the sexy showgirl, the cunning cocktail waitress to Elvis himself–the guest list of this casino murder mystery is as unlimited as the possibilities of how the night will end.

Like everything else in Vegas, the party will be a gamble and there is no certainty to the events of the evening. Whose secrets will be exposed? Which lies will be uncovered? And who will fall victim to the lawlessness of the night? Your bet is as good as mine.

In this Las Vegas party game, prepare for a sinister night in a city known for its secrets and scandals!

Guest Breakdown

With 20+ guests: At least 8 males, 7 females, 5 gender-neutral.

With 15-20 guests: 7-8 males, 5-7 females, 3-5 gender-neutral.

With 10-15 guests: 5-6 males, 3-4 females, 2-5 gender-neutral.

With 8-12 guests: 4-5 males, 2-4 females, 2-3 gender-neutral.

With 6-8 guests: 2-3 males, 2-3 females, 1-2 gender-neutral.

* The upgrade is only able to upgrade the 15-20 guest version to the 20-80 guest version of this casino murder mystery. The upgrade DOES NOT work with any other size of party.

Guest Breakdown

With 20+ guests: At least 8 male characters, 6 females, 6 gender-neutral.

With 15-20 guests: 7-8 males, 5-6 females, 3-6 gender-neutral.

With 10-15 guests: 4-5 males, 4 females, 2-6 gender-neutral.

With 8-12 guests: 3-5 males, 3-4 females, 2-3 gender-neutral.

With 6-8 guests: 2-3 males, 2-3 females, 2 gender-neutral.

Clean versions are void of references to extra-marital affairs, alcohol and/or illegal drugs. Teens and/or conservative groups often use clean versions for their mystery of choice.

* The upgrade is only able to upgrade the 15-20 guest version to the 20-80 guest version. The upgrade DOES NOT work with any other size of party.

Guest Breakdown

For 20-80 guests: at least 8+ male, 7+ female, 5+ gender-neutral.

For 15-20 guests: 7-8 male, 5-7 female, 3-5 gender-neutral.

For 10-15 guests: 5-6 males, 3-4 females, 2-5 gender-neutral.

For 8-12 guests: 4-5 males, 2-4 females, 2-3 gender-neutral.

For 6-8 guests: 3 males, 2-3 females, 1-2 gender-neutral.

This is a mystery party set on New Years Eve!

* The upgrade is only able to upgrade the 15-20 guest version to the 20-80 guest version. The upgrade DOES NOT work with any other size of party.

Guest Breakdown

For 20-80 guests: at least 8+ male, 6+ female, 6+ gender-neutral.

For 15-20 guests: 7-8 male, 5-6 female, 3-6 gender-neutral.

For 10-15 guests: 5-6 males, 3-4 females, 2-5 gender-neutral.

For 8-12 guests: 3-5 males, 3-4 females, 2-3 gender-neutral.

For 6-8 guests: 2-3 males, 2-3 females, 2 gender-neutral.

This is a clean version of Murder In Sin City set on New Years Eve!

Clean versions are void of references to extra-marital affairs, alcohol and/or illegal drugs. Teens and/or conservative groups often use clean versions for their mystery of choice.

* The upgrade is only able to upgrade the 15-20 guest version to the 20-80 guest version of this casino murder mystery party. The upgrade DOES NOT work with any other size of party.

Night of Mystery | Murder in Sin City Murder Mystery Party Game

Purchase, Download & Prepare

Instantly download everything you need, with a simple step-by-step guide that walks you through setup. No experience required!

Set The Scene

Send invitations, hand out character packets, and use the included tips to create a fun, immersive atmosphere in minutes.

Throw the Most Memorable Party Ever!

Relax and enjoy as the game guides your guests through laughter, surprises, and a thrilling mystery from start to finish.

See how a typical Night of Mystery party unfolds.

How it Works

No experience? No problem. Night of Mystery parties are specifically designed with first-time hosts in mind. Everything is laid out step-by-step—from invitations to party flow—so you’ll always know exactly what to do next.

Most hosts are surprised by how easy it is to run—and how quickly guests get into character and take over the fun. You can even play along as a character if you’d like! Just review the host guide ahead of time, follow the simple instructions, and then sit back and enjoy watching the mystery unfold.

Excellent Question! And one that needs more explaining, please see the “How to Play” Page of our site and/or download a preview file to get a complete understanding of how our mysteries are run!

Download an introduction file for more info.

Absolutely. We make it easy with two types of downloadable invites:

Before you purchase:
Use our RSVP invitations to invite guests and confirm your headcount (we highly recommend this step!)

After you purchase:
You’ll receive email-ready invitations that include each guest’s character description, so you can assign roles and send everything out in just a few clicks.

YES! As host, you get to decide how much or little you know about the murder.

If you want to play along, you will want to read the host’s guide in full to ensure that you are setting the game up correctly WITHOUT letting you know who the murderer is in this murder mystery party game!

In most Night of Mystery parties, the victim doesn’t sit out—they become the investigator for the second half of the game!

Since the victim doesn’t know who killed them, they can jump right back into the action—questioning suspects, gathering clues, and trying to solve their own murder.

Party Decorations

Costumes Inspiration

Food & Music Tips

Murder in Sin City Murder Mystery Party Game

Name: Murder in Sin City Murder Mystery Party Game
Brand: Night of Mystery
SKU: msc
Availability: InStock
Rating: 5 (1 reviews)

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Testimonials

“I purchased the Night Of Mystery packet for a work team building event. All of my co-workers said it was the best team event they've been to. The packet was very straightforward and had so many ideas and tips to help make running the event super simple. Highly recommend!”

Christine Benoit

“I hosted my first party and I was scared that if anyone could fail such a flawless package it would be myself. But this kit makes it so easy and fun. Lots of room to make it your own and not cookie cutter, but always super straight forward! I can't wait to host another one!!! Thanks Night of Mystery!”

Elyzabeth Wolfe

“I've had three parties over the years. This year we will be doing it again! Normal parties have their groups. High school over there, church over there, family over there. Well with the murder mystery dinner there is none of that. Plus you're free to not be "you" for the night. Every party has been a success! Last one, we had over 100 people come.”

Jeremy McLaughlin

“This was the BEST team event we’ve ever done. It was inclusive, creative, and so easy to execute with your kit. Everyone had a blast!”

Lydia R., HR Director