Sturdy tiles have colored curves that are used to solve the puzzles.
10 levels in all. Average time for level 1 is 20 seconds up to 30
minutes for level 10.
Make a Yellow loop using all 3 tiles! Easy? Now move to level 2, make a
Red loop using 4 tiles. Quick? Now make a Red loop using 5
tiles and all colors must match. There are 10 levels and each level gets
harder and harder with the last level using 10 tiles taking an average
of 30 minutes to solve.
Also available Tantrix Discovery Pack
Black version