Celebrate Sonic the Hedgehog's 30th anniversary with a full-color hardcover historical retrospective that explores nearly every one of the blue speedster's video game appearances!Dive deep into the extensive lore and exhaustive detail of each game in Sonic's ever-expanding universe--from the beloved SEGA Genesis to the most bleeding-edge video game consoles. This tome leaves no stone unturned, showcasing in-depth looks at the characters, settings, and stories from each exciting installment!Dark Horse Books and SEGA present the Sonic the Hedgehog Encyclo-Speed-ia--a must-have volume for any fan of Sonic, young or old!