How do you get maze blocks in Pokemon Pearl?

Answer 1

Maze blocks, decoration pieces which together may build a giant puzze, are only found in Pokemon Pearl via the Underground. They are not found by digging, but rather through swaping Pale Spheres with Goods Traders who have maze pieces avaliable. There are approximately 10 Goods Traders in the Underground and each trader will change their goods everyday. The price of the maze piece (in terms of sphere size) depends on the kind of the piece (as they have different forms) and the trader. Often, if you look around, you will find a trader who will swap you a maze piece for a smaller sphere than another one. From my experience, however, all Goods Traders want to swap a maze piece for a decent sized Pale (or Pyramidal) Sphere. Of course, if you meet someone Underground, they are able to give you a piece of Secret Base furniture - this includes maze pieces. It is up to the player to decide what to give, though.