Time by Frederik Pohl as a hardcover. (ISBN-13: 978-0345339768) Visit this author’s official website . Length: 393 pages 1991 Sega Enterprises introduces its flagship game Sonic the Hedgehog for the Sega Genesis in the US. The game was created by Naoto Oshima (character designer), Hirokazu Yashuhara (game planner), and Yuji Naka (programmer) in