A peer-to-peer gaming system for mobile phones in J2ME
This was my undergrad dissertation, basically it's just a game of Battleships for Symbian phones which runs over Bluetooth.
Source code is available. You can also view my documentation but its a very long, badly written undergraduate dissertation and makes me cringe in parts already.
The project can also be found as part of Vodafone Betavine. Betavine tried to promoted better cooperation between student developers and has allowed me to test MUFF on a variety of different mobile phones. I've no idea what it's attempting to do these days.