Momentum is a dynamic abstract strategy board game for 2 or 3 players in which the lead swings back and forth like the steel spheres of Newton’s cradle. Grabbing the lead and holding onto it is the challenge.
Players take turns dropping one of their eight pieces onto a square 7x7 game board (also 7x9 or 9x9). The momentum of the dropped piece is transferred in up to eight (orthogonal and diagonal) directions through adjacent contiguous lines of pieces. The last piece at the end of each of these lines is pushed away one cell from the dropped marble. Some fall off the board and are returned to the owning players.
The first player to have all eight of his or her pieces on the board at the end of his or her turn wins the game.