This is a "Play-a-Sound Book"

Illustrated by Rod Vass * Written by Raymond MacKemp *Sounds designed by Kristan Nordine
The story is about Sonic, Tails, Knuckles and Sally on a scavenger hunt/race against Robotnik. Robotnik of course has all kinds of tricks up his sleeves. They go through many zones to find clues (Emerald Hill, Marble Zone, Chemical Plant, Mystic Cave, Sandopolis, Death Egg, and finally Metropolis). The prize is an ancient coin called The Cool Blue Baloo worth 6,000,000 Mobiums. at the end Sonic wins and buys 1 million chili dogs, and one for everyone else... and the Mobius Hospital gets to keep the change.

All Play A Sound Photos and Plot facts by SonicEmerald
Sound facts by mAtt Pieper

It is a special book with plastic battery powered edge of buttons. The story inside is sprinkled with pictures instead of words in some of the sentances. When you see a picture show up in the sentance you're reading, you're supposed to push the corrasponding button to enhance the story with noises.

Stock art runs rampant on the buttons and cover because they probably couldn't get anyone to illustrate the thing. A strange and common problem. I bet you want to know what sorts of sounds the buttons make. SonicGear is very thorough: Whooshing run, punching noise, skidding sound, helicoptering, a spring, Robotnik laugh, ?,?,?,?.
To the right, you can see obvious Stock Art Knuckles, floating like an artifact in a sand whirlpool! They didn't change the art at all! Unfortunately "wonky tails" the cross-eyed mistake is spammed in here as well.