riverdrift says Click on a marble then select a space to move to.
You can only move a marble if there is a clear path from its start to its destination.
You may move horizontally or vertically, but not diagonally.
After each move, three new marbles are placed randomly on the board.
Get five or more marbles in a straight line to remove the line.
You get points for each line you remove. The longer the line, the more you get. OK