Ryukyu is absolutely worth picking up- it's very relaxing- not something you'd want to throw against a wall- plus it's a Face game which is always a plus (I love Time Cruise II, Hani on the Road and Metal Stoker- and actually had a lot of fun beating Alice in Wonderdream)- unless the game is Cross Wiber- which is hideous. Most Face games are at the least very original. I also feel that matching up poker hands with the "bricks" adds an interesting element to what can be a very monotonous genre-
I guess you'd have to like falling bricks and poker to really like it though