Challenge Puzzles from Ravensburger are a must for all puzzle fans looking for a real challenge: 500-piece puzzles test concentration, endurance, and dexterity while being incredibly fun! Whether featuring Darth Vader and the Clone Troopers from Star Wars, Pikachu, and the rest, or small-scale puzzles made of buttons or glitter, these challenges are the perfect workout for all brain teasers and professional tinkerers!