This improv game is in the following improv game categories:
The performance consists of 2 parts. First part is 3-5 scenes in which each character is introduced. In the scene, the Evil Character invites the guest. There should be good reasons why the guests accept the invitation, based on whatever information was provided in the scene prior to the arrival of the Evil Character.
Second part is where all guests have the rendez-vous in the chosen location. They do not know each other; there is probably confusion. When all guests have arrived, the Evil Character explains that be the end of the night, all guests but one will die.
The guests then try and figure out why they are there, and perhaps evade their deaths.
Supporting actors may play other characters the live ot, or haunt the location.
It should be important that the characters cannot (easily) leave the location. ( Also known as Behind closed doors. ).
Performance ends either when only one guest remains alive and is set free by the Evil Character, or when the guests find out why they are there and are 'forgiven' by the Evil Character. Or, alternatively, they might kill/capture the Evil Character and escape.