LeapFrog Leapster L-Max Game: Letters on the Loose The letters in the Letter Factory are loose and Professor Quigley needs your help to pull them all together! Write a letter on your handheld and see it come to life on the TV. Help Professor Quigley finish the Talking ABC Book by writing letters. Search the factory and collect as many letters as you can. Teaches upper- and lowercase letters, writing and phonics skills.