A lovely and slightly addictive game. Can be a little frustrating at first, until you get the hang of the controls.
Requires diagonal movement over thumb sticks or D-pad. I found personally that you can easier hang on to the edge of blocks by using lots of little presses on the D-pad rather than trying to balance the stick.
Nice little tunes playing in the background which do not distract from the game play. Can be played on a handheld PC suck as an Ally but the text for the menus will be really small, but the game itself will play very well.