This is an implementation game of Othello, also known as Reversi. I developed it for my Nokia N900 and it requires the Qt Web Runtime (WRT). At the time of writing the WRT can be installed from Maemo’s Extras-devel repository.
You can download the Othello Widget from here: http://bit.ly/n900-othello-wgt
Here is a short demo how Othello Widget installs on the device and what it looks like when running: