This typing tutor with amazing openGL graphics is the most entertaining way to learn how to type on the Mac. Loosely based on the classic arcade game Missile Defender, you must destroy incoming asteroids before they destroy your strange green ovaloid defenders. Learn to type or just improve your typing skills. What's New: Version 1.1.5: Corrected the registration error which reguired the user to reenter serial # after every launch. | 
