Abalone is a board game something like sumo wrestling with marbles.
The idea is to push your opponent's marbles off the hexagonal board by pushing them with your own marbles. For the curious, there are rules behind pushing your opponent's marbles with your own. You push your opponent's marbles along the same line, as long as you are pushing with more marbles than he is blocking with. As you cannot push more than three of your own marbles you can block a line by having at least three of your marbles in a line on it. Push 6 of your opponent's marbles off the board and you have won.