Game theory is mainly used to study security problems in Mobile Ad-hoc NETworks (MANETs). Only two players: an attacker and defender are considered in security game model in existing works on game theory approaches for security purposes. In MANETs, the assumption is not efficient because of absence of centralized administration. In proposed system, using advances in mean field game theory, the authors will propose a novel game theory called forwarding game theory for multiple players to enhance security in MANETs. The mean field game theory gives a efficacious mathematical tool for security enhancement in MANETs.