Complex sentence: The film was intended as a follow up to "Death Race 2000" (1975), until the release of "Death Race 2050" (2017), a real sequel to the original film and "Deathsport" is now became as a unrelated film.
Split into simpler sentences: The film was intended as a follow up to "Death Race 2000" (1975). Until the release of "Death Race 2050" (2017), a real sequel to the original film and "Deathsport" is now became as a unrelated film.