The objective of the game is to align 4 checkers in a row, column or diagonal of the board... the same as in Connect 4™. But be careful! The checkers move in a different way in this variant of the game:
The checkers go down until they get stopped by another checker in the same column or in a column on the right.
Players alternate dropping checkers in a rectangular grid by clicking the buttons on top of the board. This will make the corresponding checker to start dropping from the upper part of the columns selected. As mentioned before, it will go gown until it reaches the bottom of the board or it is stopped by another checker (of any color) that is in a column weakly to the right.