Multiplayer gaming has been around for a long time. But multiplayer gaming has still not taken off for mobile gaming. The main reason for this hurdle is the performance of gaming over the network. Except Apple Inc., no other company has been successfully been able to overcome this hurdle. Apple introduced the Game Center, which basically allows users to play with different users in the vicinity. So still, even though it makes multiplayer better, there is a limitation of being on the same network.
Companies like OpenFeint and PapayaMobile have been able to introduce frameworks using which developers can now build games allowing the users to socially interact with each other. Recently, an Israel based company, Nextpeer is involved in the development of a framework which will allow users to compete against each other in real time. This will be great news for mobile gamers! More info can be found here.