The object of this game is to capture your opponent's pieces by moving your pieces next to them. Each turn, you may either drop a new piece or move one of your existing pieces. To perform a drop, click on an empty cell that is adjacent (orthogonally or diagonally) to one of your existing pieces, and a new piece will be created in that cell. To perform a move, click on one of your existing pieces, then click on an empty destination cell that is 2 cells away in any direction. After either kind of move, you will take control of all opposing pieces that are adjacent to your new or moved piece. If you have no valid moves, you must pass. The game is over when one player's pieces are completely eliminated, or when the board is full. The winner is the player who controls the most pieces.
There are several variations with different starting configurations and board sizes, most of which place barriers in some of the cells. The "Random" variations place barriers randomly.

By jumping to the highlighted empty cell, player 1 (red) will capture the 5 surrounding blue pieces.

Eyes is a trickly layout where the key is to jump into and out of the center and corner cells at the right times.