In Neutron, players have two sets of subatomic particles and have to force a neutron to bounce towards their side. It is an abstract game for two, played on a 5x5 square board. All pieces move in a straight line in one of the 8 directions, and they cannot stop until they find an obstacle. There is no capturing. The Neutron is a common piece, initially put on the center of the board. The first player only moves one of their pieces. Afterward, on their turn, each player must first move the Neutron and then one of his own pieces. Moving and forcing the Neutron into your home row, or blocking it completely so that it cannot move, is the object of the game.