The original Rush Hour is still much more fun.  The only reason I had to buy this is my son is such a train freak.  The puzzles are not as challenging overall, yet the difficulty level is a bit uneven in the four categories (junior, beginner, intermediate, advanced).  Also, the build quality is poorer, as a few of the train pieces don't sit properly on the board, and the colors on the train pieces do not match those printed on the puzzle cards, a sore point for a young boy.