Once you've played all puzzles from the original deck, you can order a new package of puzzles.
Expansion pack 1: 104 puzzles from easy to moderate
Expansion pack 2: 104 puzzles from challenging to extreme
Expansion pack 3: 104 puzzles from easy to extreme (all levels)
5 x 4.5 x 0.8 inches
ColorKu Expansion Packs
Puzzle card set at different difficulty levels.