There are two versions of Oust. One is played on a hex grid, and the other is played with a Go set. Players take turns adding their stones to the board. When you form a (horizontal or vertical in the square grid version) connection between your newly added stone and one or more of your on-board stones, you form a larger group. You can only make such a move if said larger group will connect with an enemy group upon its creation, and if said larger group is larger than all of the enemy groups it connects to. Then all those enemy groups are removed, and you must add another stone while it is still your turn. If all of your opponent’s on-board stones are removed from the board via capture, you win.