使用鼠标对准怪物，按一下空格键，就可以消灭怪物（不是全部都是怪物，河马和魔术师当大小等于或大于200，就会加上1个生命，而魔术师会把得分加上10分！）。 If you use the mouse to target the monster, click the space bar to destroy the monster (not all the monster, hippopotamus and magician. When the size is equal to or greater than 200, it will add 1 lives, and the magician will add 10 points to the score.)
自己做的。 I made it on my own.
