Ready for a challenge? Edge-matching puzzles are so difficult that a $2 million prize for solving a 256 piece edge-matching puzzle went unclaimed after 3 years of intense competition. Aeon provides 600 edge-matching puzzles across 12 skill levels. There are 4 puzzle sizes from 2x2 to 5x5. For each size, there are 3 types of puzzles: Rotated (Beginner), Moved (Intermediate), and Scrambled (Expert). Aeon's puzzles are solved by matching colors and patterns for inside edges, and placing solid colors on outside edges. Game Center leaderboards are provided for total score, total puzzles solved and total edges matched. Game Center achievements are provided for solving a single puzzle in a level, and solving all puzzles in a level.Why Aeon? Because it's going to take awhile.