Fission is a game where players attempt to eliminate all of their opponents stones but must have at least one stone left on the board in order to win. Played on a 8x8 grid, players have interlocked groups of 12 stones each. Piece can be moved in an orthogonal or diagonal direction and do not stop until they reach either the edge of the board or hit another stone. If stopped by another stone, the moved stone and all adjacent stones are removed from the board.