Roll the labyrinth tunnel ball

Roll the labyrinth tunnel ball is a logical game.
Rotate the blocks with your finger to create a path for moving the ball to the light GOAL block.
But fixed blocks can't be rotated.
Solve it with the minimal moves.
The "Solution"-button is available for all tasks(puzzles).
Its a very addictive puzzle game.
There are 5 groups by dimension (4x4, 5x5, 6x6, 7x7, 8x8).
Each group has 5 categories of difficulty.
Each categorie has 200 levels.
There are total (5x5x200) = 5000 tasks.