Action Comics by Cary Bates and Curt Swan in issue #432 (February 1974). Issues #437 (July 1974) and #443 (Jan. 1975) of the series were in the 100 Page Super Spectacular format. Martin Pasko wrote issue #500 (October 1979) which featured a history of the Superman canon as it existed at the time and was published in the Dollar Comics format. The superheroine Vixen made her first appearance in "Action Comics" #521 (July 1981). To mark the 45th anniversary of the series, Lex Luthor and Brainiac were both given an updated appearance in issue #544 (June 1983). Lex Luthor dons his war
Cultural impact of the Guitar Hero series the "Guitar Hero" franchise have exceeded one billion dollars with over 16 million units sold, excluding downloadable content. Over 20 million songs have been sold as downloadable content as of July 2008, and 34 million by May 2009. As of October 9, 2008, the series has sold 23 million units with sales of US$1.6 billion, and as of May 2009 has earned US$2 billion at retail. Activision claims that "Guitar Hero" is the third largest video game franchise after the "Mario" and "Madden NFL" series, and is present in over 15 million households. "Guitar Hero: World Tour" along with other