Who or how is the murderer chosen?

who or how is the murderer chosen?

My response:

For most of the games on my site, the murderer is chosen by the host. They cast the game and know everyone's secret.

(The host doesn't play a character in the same way that everyone else does. Instead, they organise and facilitate the game for everyone else. I describe what the host does here.)

Where the host is also a player, such as Reunion with Death and Death in Venice, the host still casts the game but because they don't know who the murderer is, the murderer is chosen randomly.