This sourceforge project aims to implement games for mobile phones based on the J2ME / Java language, supported by many phones. So far we have implemented a Sudoku and a Freecell game.
Both of these games are complete and running well, I enjoy them almost daily on my phone - they are the perfect thing to fill in those otherwise wasted gaps in a day where you are otherwise stuck waiting.
For both of these games, the next step is to expand compatibility to other phones and improve documentation / help. New features will also be added.