The rules of this game are a simplified version of the actual "Billard Rotation". It’s different from the real rule. RULE Score more points than your opponent(CPU) to win the game. Strike the ball into a pocket from the least number to the largest turn by turn. ① scores 1 point and ⑮ scores 15 points and so on. FOUL ＜No hit＞ When the cue-ball did not hit the least numbered ball. ＜No cushion＞ After the cue ball hit the target ball but no balls hit the cushion. ＜penalty＞ ■Player turn change. Opponent start game with free ball. ■Foul 3 times continuously in own turn will lose. ＜ free ball ＞ By the opponent‘s foul, the player in play turn can set cue-ball in anywhere.