Tested on 22-30 years old only so far, so why say its a game for 13 years and older?
The Merge Cube itself is made for 10 years and above. Indeed 13-20 years is a safe assumption for now.

  • Why do you need the cube?  Why not more AR than just show the wonder in your hands?
  • Explore more educational factored games, tangible learning games.
  • Are you sure people would want to use their phones when an analog game is to liberate them from it?
  • Why don’t you use same color for both sets of seven wonders to educate them to differentiate between them than help them with the color?