It is also known by the abbreviated name Gatchaman. The original series, produced in 1972, was eponymously named Kagaku Ninja Tai Gatchaman and is most well-known to the English-speaking world as the adaptation titled Battle of the Planets. The title is unofficially called as G-Force (not to be confused with the subsequent 1980s English-language adaptation of Gatchaman, known as G-Force: Guardians of Space). Tatsunoko also uses the official translation Science Commando Gatchaman, as shown in numerous related products and media. A second feature film version of Gatchaman is being produced by Imagi Animation Studios for release in 2011. The first feature film was released in 1978.