LeapFrog LeapPad Ultra eBook Learn to Read Collection: Mysteries (works with all LeapPad tablets) Help detectives Leap and Tad solve two mysterious cases while building reading skills! Features three auto-adjusting reading levels, 100 key words and seven reading activities Teaches phonics rules, sight words, listening and reading comprehension and decoding skills Ages 4-6 years Works with all LeapPad learning tablets (sold separately); not with LeapsterGS and Leapster Explorer; Internet connection may be required for cartridge