Drop Jo does not have any squares that are not found in standard games of Jo. The only difference in Drop Jo is that there is gravity. When a board is created, one side is said to be the "bottem". When players move, they always fall toward the bottem of the screen. For the first part of a players turn, the player picks a direction to move. Then, acting as if he were already there, he puts gravity into effect, and falls down to the bottem. Because of this strange construction, it is possible to build on top of your previous moves..

One of the exceptions to the gravity rule in drop Jo is the teleporters. When you come out of a teleporter, that turn and that turn only you are not effected by gravity. That means that you can come out of a teleporter one turn, and then build on top of yourself the turn after. Or you can choose to come out of a teleporter one turn, and then move down, left, or right and fall to the bottem.