It’s a mystery! Betrayal is a multiplayer mystery game where you and 6-12 other players work together to solve who among you is a betrayer to the crew!
At the beginning everyone on the team is assigned a role. Regular crewmembers must perform tasks around the map that are represented by simple mini-games. In the meantime, the betrayer, who looks just like everyone else, can make things difficult for everyone by sabotaging stuff and slowly killing off the rest of the team. After the round is over, there is a brief discussion that allows the players to try and figure out what was happening. The betrayer also takes part in the discussion, pretending to be a regular player. After the discussion is over, someone can be voted out, and if the bad guy lives on, the game continues.

See Instructions in game.