Device : Sony Xperia X10 mini
OS: 2.1

Even though the screen on the test device is very small, the game displayed fine and it was well playable. The display can be horizontal or vertical.
There are four difficulty modes available, and various help settings, depending how hard you want your game to be.
In the history you can see your top times on each difficulty level and your latest scores. It will also show if help was used on each score shown.
There is an auto-save feature, so you can resume the game you were playing last, keeping track of the time.
Well designed, easy to use, no glitches or crashes.
This application can be a good companion for those commuting.
There is also paid version without advertisements.