A social deception game of paranoia, deduction, and survival—Murder brings the classic experience from Garry’s Mod into S&box with a modern twist.


Each round, players are secretly assigned one of three roles:

  • The Murderer – Blend in with the crowd, strike at the right moment, and eliminate everyone without getting caught. 
  • The Detective – Armed and dangerous, your job is to identify and stop the murderer before it’s too late. 
  • The Bystanders – Stay alive, gather clues, and work together… but trust no one. 

Explore detailed maps, collect clues to earn a weapon, and use your instincts to figure out who’s lying. Every decision matters—act too soon and you might doom an innocent, wait too long and you might be next.


Tension builds as the player count drops. Footsteps echo. Someone’s watching.
 Is that person following you… or protecting you?


Trust no one. Survive if you can.