Momentum is played on an initially empty 7×7 board. Players take turn to a onto the board.
After the first by Player 1, Player 2 can choose to take over the placed .
Afterwards the momentum of the dropped unit travels outwards in all 8 directions, going through adjacent units, and the last dropped unit in each line will be pushed.
If Player 1 made a at d5 in the above board state, this would be the result:
Both b7 and g5 were pushed off the board and killed, while e6 was pushed to f7 and b5 to a5.
If after dropping you have all 8 out on the board you immediately win!
Draws are not possible.