Line up 4 – You and your opponent get 21 checkers apiece and the chance to get 4 in a row. But you both get the chance to block the other’s attempts to connect with your own checkers! When the game is done for the day, it’s easy to store the checkers in the columns and fold up the trays on the playing grid. You can have Line up 4 fun anywhere when you play with this Grab & Go game!
Line up 4 is a well known vertical game played with “checkers” .
The board is placed in the stand to hold it vertically and the players drop checkers into one of the 7 slots, each of which holds 6 of the “checker’s” men, until one player succeeds in getting 4 in a row–horizontally, vertically or diagonally.
The game is actually non-proprietary and nicer adult versions can be found under the name The Captain’s Mistress.