The history of anime began at the start of the 20th century, when Japanese film makers experimented with the animation techniques that were being explored in the West. The first generation of animators in the late 1910s included Ōten Shimokawa, Jun'ichi Kōuchiand Seitaro Kitayama, referred to as the " fathers" of anime. During World War II, propaganda filmssuch as Momotarō no Umiwashi (1943) and Momotarō: Umi no Shinpei (1945) were made, the later being the first anime feature film. During the 1970s, anime developed further, separating itself from its Western roots, and developing distinct genres such as mechaand its Super Robotsub-genre. Typical shows from this period include Lupin IIIand Mazinger Z. During this period several filmmakers became famous, especially Hayao Miyazakiand Mamoru Oshii. In the 1980s, anime was accepted in the mainstream in Japan, and experienced a boom in production. The rise of Gundam, Macross, Dragon Ball, and the Real Robotand space operagenres set a boom as well. The film Akiraset records in 1988 for the production costs of an anime film and went on to become a success worldwide. Later, in 2004, the same creators produced Steamboy, which took over as the most expensive anime film. Space Battleship Yamatoand The Super Dimension Fortress Macrossalso achieved worldwide success after being adapted respectively as Star Blazersand Robotech. The internet also led to the rise of fansubanime. Spirited Awayshared the first prize at the 2002 Berlin Film Festivaland won the 2003 Academy Awardfor Best Animated Feature, while Innocence: Ghost in the Shell was featured at the 2004 Cannes Film Festival.