Starting formation:

Gravity Gammon

Quick rules:

In Gravity Gammon you try to get the most possible weight placed on your own half of the course. The game is played with fifteen game pieces for each person. The game pieces have to follow the course. You have to move your game pieces in relation to the number of dots that you throw with two dice. If you throw two identical numbers, for example, 5-5, you can move four times five squares. You can decide yourself which game pieces you want to move.
If your game piece is located on a square where there is a “bridge” (a dotted line), you can choose to cross it if you throw a 4, a 5 or a 6. You can knock your opponent home if you land on one of his game pieces – but if he has two or three pieces located on the same square, he cannot be knocked home. A piece that is knocked home is placed on the starting square (the dark green square). A piece that is knocked home must always be played before other pieces can be moved.

When all of your pieces have arrived at your “homeland” (the last six squares before the dark green square), you can start to knock them out of the game and place them on the back-most, light green squares on the board. Several finished pieces can be located on a square.

When the game starts:

When the game is started, the game pieces are set up as shown in the picture. The counterweight is placed outside the game board itself on line 0. Each player throws one die each. The player who throws the higher number moves the total number for both dice. If you throw a six and your opponent throws a two, you move one of your game pieces six squares and two squares, or two squares and six squares. You can also use the number thrown on two different game pieces.
You have fifteen game pieces that are marked with a concave triangle with indication of weight. Your opponent’s game pieces have a concave circle.

How the game piece is moved:

You have to move your game pieces so that they follow the course around. You may not move your game pieces backwards.
When you have moved your game pieces in relation to the number of dots on both dice, you move the counterweight in order to get the board in balance again.

Use of doubler die:

When a game begins, one point is played for. If you think that you are in the better position, you can turn the doubler die to the number 2 and ask whether your opponent is ready to play for two points. If he says “No”, the game is over and you have won a point. If he says “Yes”, two points are played for. Now he is the only one entitled to ask whether you are willing to play for 4 points. If you say “No”, you lose two points. The use of the doubler die thus changes, by which up to 64 points can be played for in a single game.

How you win in Gravity Gammon:

  1. If you have collected so much weight on your own half of the course that the game board can no longer be brought to a horizontal position, even if the counterweight is in the outermost position.
  2. If you get to the goal first with all fifteen of your game pieces. When your game pieces have been collected in your homeland, they must be knocked out of the course. They must be knocked out of the course with the number of dots you have thrown with your die. The throw must be greater than or equal to you hitting the dark green square. For example, if you have an empty square 3 squares away from the dark green square and have pieces located 4 squares and 2 squares from the dark green square, the rule is that you may not move the piece 2 squares away on a throw of 3 with the die.
    Instead, you have to move one of your other pieces.

A game of Gravity Gammon can be played alone. But if you are skilled, you play to 17 points and use the doubler die.

pdf_grey You can see the printer-friendly version with information about Gravity Board games here.