Vegas Casino Sin City Slayer Murder Mystery

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A Las Vegas casino murder mystery party game for 8-18 guests, ages 14+. Get ready for a hilarious celebrity-themed murder mystery party game set in glamorous Las Vegas! With both expansion packs, this game is expandable to 38 unique players and up to 68+ with the additional expandable paparazzi player and Monster Muggies cast member (see the expansion pack character lists for details).

Spoil yourself, and choose the party ready option above, and our dedicated staff will fold and slip your clue cards for rounds one, two, and three into the envelopes to prevent you from seeing spoilers on the round cards.  Without the party ready option selected, you will have some assembly required with your kit and there will be spoilers upon opening the kit and viewing the rounds 2 and 3 clue cards.  The download version is a different product and does not come with the party pack, as they are not seamless and materials should not be used together. 

Five out of ten difficulty.

Helpful Links:

Click here to view the character list!
Click here for the free, printable invitation for the 18 player kit.  Click here for the 30 player kit invitation. 
Click here to view the sample game materials
Click here for the 12+ character expansion pack #1 character list (adding this makes a 30 player game)
Click here for the 8 character expansion pack #2 character list (adding both expansion packs makes a 38 player game)
Click here for the instant download version of the game
Direct your guests to the corresponding site at 'Your Mystery Party'


Mystery Synopsis

The most highly anticipated VIP party in Las Vegas is almost here! The Cosmo Casino & Resort is set to host a world class soiree for celebrities, news media, and a few Vegas locals that were lucky enough to score tickets. Some of the most prominent figures of our time will be in attendance and this will certainly be a night to remember. However, there is a situation. The city of Las Vegas has been terrorized by a serial killer with an MO of attending VIP events held on the strip. The killer, known as the Sin City Slayer, chooses victims from unsuspecting party guests. The Las Vegas police are currently working with federal agencies to catch this deranged predator. Hopefully, the killer doesn’t have a ticket to this event. This is where your story begins.

Kit Sizes:

  • 8-18 player - includes main game players
  • 8-30 player - includes main game and expansion pack #1
  • 8-38 player - includes main game and both expansion packs
  • 8-38 player - includes main game, both expansion packs, and 10 tabloid crew members  (see character list for details on duplicate team members).
  • 8-38 player - includes main game, both expansion packs, and 10 tabloid crew members & 10 Monster Muggies cast 
  • 8-38 player - includes main game, both expansion packs, 15 tabloid crew members, and 15 Monster Muggies cast 

The expandable players (tabloid crew, Monster Muggies Cast) are not unique story lines, but rather are supporting players for Reagan Paratzy & Logan Mack. They will, however, have duplicate clue cards each round, they mingle each round like everybody else, and they still guess whodunit. The only difference is that they will not have a unique story line. These players are great for shy/reserved players, last minute RSVPs &/or adult guests who may consume a few too many cocktails.

Follow My Mystery Party's board Sin City Slayer: Vegas Murder Mystery Party Game on Pinterest.
Minimum age:
14 years
Number of players:
8-18 players
Expansion pack:
12 players
Expands to 68+ players with teams (including expansion pack)
Gender of players:
Flexible (most characters)


  • 5
    Great Night

    Posted by Unknown on Sep 16th 2019

    First time throwing a murder mystery party. The instruction lay everything out for you so it is super easy! Everyone had such a wonderful time and I can see our group doing another one in the near future. Loved the theme of sin city because it was easy to decorate for and the costume suggestions were things most of my guests had so no big investments needed from the attendees. Overall it was a great party!