Pen Flip Master 对比 Coach Simulation 的使用情况和统计数据

=== HOW TO PLAY === ◉ Simple and intuitive game with easy-to-remember controls ◉ Tap and Hold to flip your Pen ◉ Upgrade your Pen Flip Master's features and flip until the lesson is over === GAME FEATURES === ◉ FREE and EASY to play! ◉ Lots of UNIQUE LEVELS to play!