This is a walkthrough, tips, cheats, and codes book for the "Sonic the Hedgehog" video games. It covers the first two Sega Genesis/Sega Mega Drive games, and the first two Sega Game Gear games. There are grey scale screenshotys of both of the Genesis games, but no imagees for the Game Gear games. There are also a few black and white photographs showing various video game accessories. The book originally cost $12.95. This is part of a series of Compute Books, video game guides.