It's pretty much Mahjong with some additional benefits. Campaign mode was a little odd at first, but the shadows are what throws you off- the ones on the sides are indeed usable- though it may not look like it in the beginning. However, I do enjoy the fact that they took the time to actually try to make it more interesting, instead of just throwing another Mahjong plate at us and called it new again. Though, this game suffers from one rather painful flaw that I've noticed from a few of these kinds of games. "You Loose!" That's right, we loose if we don't get lucky enough to shuffle the tiles correctly when you get low on tiles.. I 'loose'd on my first playthrough because I wasted a shuffle thanks to the menu interrupting the shuffle, but consumes one of your shuffles!