Game Programming Know How:

plz nairalandarz i`m having an assisignment. i need  to produce a game written in java or c#.
i need a source code on any game. either 3d or general mobile games as long as it will run!
can anybody help me with a ready made source code. i have searched the interent for this but to no avail. if anyone knws where i can find a source code for a particular game online the person can plz post the link. and if anyone as already writtena code for games and run, plz the person can mail it to me. plz
i will aprreciate your contributions beauitful nairalanderz, muuuuuuuuuaah, 
justlakeside@yahoo.co.uk