This is one of those games without any kind of secrets: drag the ball around the board, trying to avoid obstacles and trying to reach the finish line. It might seem boring, but it isn't; it's Rolling Sky and it will definitely liven up your day when you've got nothing else to do.
To play on the bus, on the underground, while your waiting for your girlfriend or boyfriend...
A simple yet foolproof idea
You'll have to pay plenty of attention and dodge all sorts of dangers, such as huge hammers that will try to crush you, chasms, obstacles that appear all of a sudden, lightning... It's absurdly entertaining, fact that you'll appreciate and that will make you spend too much time hooked onto this game, instead of doing other useful things. Hard? Quite a bit.
So, what are you waiting for to download it?