In the United States, the popularity of "Star Wars" had a similar, though much smaller, effect on the development of anime. "Gatchaman" was reworked and edited into "Battle of the Planets" in 1978 and again as "G-Force" in 1986. "Space Battleship Yamato" was reworked and edited into "Star Blazers" in 1979. The "Macross" series began with "The Super Dimension Fortress Macross" (1982), which was adapted into English as the first arc of "Robotech" (1985), which was created from three separate anime titles: "The Super Dimension Fortress Macross", "Super Dimension Cavalry Southern Cross" and "Genesis Climber Mospeada". The sequel to "Mobile Suit Gundam", "Mobile Suit Zeta Gundam" (1985), became the most successful real robot space opera in Japan, where it managed an average television rating of 6.6% and a peak of 11.7%.