Object: visit all positions.

Click the board anywhere to randomize the setup.
Arrows with random orthogonal orientation will drop and fill the board.
Click a position to start.
The arrow will lose its colour and turn dark.
Now click another position in the direction the arrow in the current position points to.
All arrows on this path will lose its colour and turn light grey.
You can revisit any positions.
You cannot walk onto the board frame.

You win once you have visited all board positions.
Due to the randomization not all setups may be solvable without editing the board.
To edit the board, click the EDIT button, then click a board position to turn a (yet unvisited) tile clockwise.
However, you get 100 penalty point for each such 90-degree edit, so try to use as few of them as possible!

Beginners level: visit all squares
Expert level: visit all squares, creating only as many points as given in the target number.

Variant 1:
In this variant the four corner tiles are always the same, pointing at each other in a circular manner. This setup makes it much more likely that the board setup has a solution.
Variants 2: all positions are randomized.
Variants 3,4: like variants 1 and 2, but played on a 10x10 board.

Button MENU transfers you to a menu screen with 40 fixed setups.
Simply click any of the given numbers.
Solutions are given.
Hit the 'S' button on the menu screen to go to the SOLUTIONS screen.
All solutions have been found by hand, so you might be able to improve of them.