Shadows

A technique where a player has a shadow, a person that follows the player around and can interact on an ingame-, and/or meta-level with the player. This shadow can for instance portray a players conscience or voices in the players head (and as such the shadow doesn't not exist to other players), or could be something semi-real like a posessing spirit or guardian angel (and then the shadow may or may not exist for other players).

Usually shadows are used to influence or control the player in someway. Knappnålshuvudet is a good example of a shadow-heavy LARP, where shadows in the form of guardian angels were used.