The second point that I criticize a bit, is that the game of the luck factor can compensate the power factor. Thus, theoretically, someone with great "luck of the draw" despite the fact that he has solved the last to the task of getting as many points as the one who had finished first, because the first gets a blue gem (value 3 points) and may draw a jewel blind. So should he a brown gem (worth 1 point) draw, he has 4 points. The fourth player who gets no bonus stone, but has a chance at the blind draw a red gem (value 4 points) to pull. This is nice for potentially weaker players, but the performance of a stronger player but diminish a little. No matter how you look at it, so once you play with these jewels are "injustices" (read: luck factor) inevitable. This can be m. E. only fixed-scoring (first gets 4 points, second 3 points, third 2 points and fourth 1 point at not solve within the time specified no point) solve. Here one can possibly. At unequal playing partners give a head start.
Otherwise, I have to say that I appreciate very much Ubongo as game (myself come from the Tetris-generation) and enjoy playing. The processing of this issue is very robust and high quality. Especially nice is that the accessories nicely thought out (cloth bag for storage of jewels or lay tiles, as well as additional Plastikbeutelchen where you can then store the Jewels is if you use the bag for keeping laying tile. Then the Sortiertng is the 9 blue Jewels and brown on the grid easier because they are seen.
Basically, I would say that I would highly recommend this edition of the game Ubongo for "first time buyers" with technology-savvy children to 100%. If you, however, already has a copy of Ubongo, I do not think that a new acquisition is imperative. But the game itself is really recommended and teaches children logical thinking. It should in my opinion be in every collection of games!