I got a code in the promo code thread (thank you!) and like the other Piperoll games, this is really an excellent puzzle game. The gameplay, at least in the early levels, looks to be quite similar to the earlier PipeRoll entries, but is nicely enhanced by the attractive 3d backgrounds and animations. The Game Center support is much appreciated as is the abilities to pinch to zoom out and see more of the puzzle at once, although I would like to get even a farther zoom out. With the large number of levels and the nice enhancements, this looks to be the best PipeRoll yet!