A Multiplayer mobile game is very similar to the multiplayer games for PCs. Unlike the old single player mobile games with artificially intelligent opponents, we have the other player with a mobile device playing the same game.
This is usually achieved through
Infra Red Connectivity
Most recent mobile phones have infra-red connectivity for data sharing with other phones or PCs. This connectivity is not really good for gaming because of its line of connectiviy should not be disturbed. No good player would enjoy this type of connectivity without moving his hands.
Bluetooth multiplayer games
Mobiles are connected through a wireless protocol called Bluetooth using special hardware. The games are designed to communicate with each other through this protocol to share the gaming information. The basic restriction is that both the users have to be within a definite distance to get connected. In this type of connection the game mode can only be one to one or two players more like a peer to peer connection between two PCs.
GPRS multiplayer game