There are several new and fun puzzles but nothing that couldn't have been put on ds just as easily. There was absolutely no use of the 3ds features that I could detect. You would think that they would rather have it on a ds cartridge so more people could spend money on it rather than just owners of the 3ds.
like the last person said why put this on the 3ds.. The DS has 1200+ puzzles and you know the 3ds carts can hold more, there should of at least been 3,000 or more puzzles and to even put another nail in the coffin for this game nintendo is putting out puzzler world XL on the dsishop for 4.99 OCT 18 with 1500+ puzzles (more puzzles for 75% less the cash) Heads up though the dsiwere games looks like an iphone port from 2010