If the seal is broken and the box is opened, the puzzle is non-returnable. Another distinction is that the puzzles within the series are dear by puzzle requirements; the game isn't in the value vary of the standard board game or puzzle ball, for instance. Many puzzles, whether math issues, phrase challenges or physical objects like 3-D puzzles and scrambled cubes, involve staying at residence, one-on-one, man versus puzzle, while others combine an object and a quest into the physical world outs...