The rules are simple. The game has two players, and before they start the first player specifies a number of barriers and turns per player. Player 2 builds up to the specified number of barriers (or fewer) and locks in their choice by hitting Submit Move. Then play begins, starting with Player 1 and alternating until one of the players sink their ball or the turns run out. The winner is the player who sinks their ball first, or if the turns run out, the player who is closest to the hole. Angles are in degrees, so you'd better know your degree circle!