It is a 3 - 10 player Third Person Survival Multiplayer game where the players take the role of an Explorer or the Hidden.
As the Explorer, the player tries to find out the identity of the Hidden. You do this by fixing Generators around the map that then turn on the Big Generator that reveals the identity of the Hidden.
As the Hidden, the player turns in and out of the Monster forum to try and kill the Explorers without the Explorers finding out who they are.
The Explorers win by killing the Hidden and the Hidden wins if they kill all Explorers.