The OP gameplay video about Ao is good since it does not spoiler anything, but the vast majority of the game mechanics are not visible in such video. The game is, of course, about rolling a brick over a weirdly shaped playfield, to reach the goal. However, on most levels, the mechanics include many different switches, acting in several different ways from level to level. It is a truly fun and entertaining puzzle game, which is far from impossible but takes quite an effort to be completed, and the levels are not redundant: there is always a new and different kind of solution to be found, a different switch sequence, or sequence of moves to place the brick on the correct spot. Moreover, the two player mode is really fun and challenging, the records scored in 1p or 2p mode are perfectly and equally legit, and fully comparable with each other.