Designed By: Reiner Knizia
Published By: Pro Ligno Spielewerkstatt
The game is played on an empty 7x4 square board
Move
On each move, each player must do one of the following actions:
- Drop a friendly stone on a column's lowest possible empty cell (the lowest row is the bottom row).
- If the column is full, insert a friendly stone on top and shift all stones down, removing the bottom stone.
Goal
A player wins by making a (orthogonal or diagonal) 4 in-a-row.
However, if both players have a 4 in-a-row, the game continues.