Create a full pyramid. Arrangement by layer:
(Note: the middle sections of the first and second levels are irrelevant, just as long as it leaves enough white marbles for the starting setup. That is why they are denoted in lower-case.)
Red and black marbles in the opening setup are known as BASE MARBLES. BASE MARBLES are permanent--they do not move at any point in the game.
The white marbles, and any red or black marbles that replace them throughout the game, are known as SPILL MARBLES.
Players choose a color. Red goes first.
On your turn, check to see if you made any connections. If so, see CONNECTIONS below.
Remove any white marble, allowing the others to drop as usual, then place the marble of your color at the now-empty spot on top. Check again for any connections of your color.
If, during your turn, any BASE MARBLES of YOUR COLOR on opposite sides of the board (e.g. North-South or East-West) are connected in an unbroken chain, remove all SPILL MARBLES of YOUR COLOR, and replace with white marbles. You may take another turn.
A player may have 2 connections simultaneously. This counts as 2 connections, but the player takes only one additional turn as if they made 1 connection.
Connections are only counted on your turn. Your opponent's connections only count on their turn.
The first player to make 3 connections wins the game.
Players may agree to change the starting configuration of BASE MARBLES with each game.