– Collider ranks six of the best R-rated science fiction films released since 2000, arguing that mature ratings have allowed some of the genre's most ambitious and visually striking work to flourish over the past 25 years.
– Denis Villeneuve's Blade Runner 2049 (2017) is praised for expanding the original's themes of humanity and identity through Roger Deakins' cinematography and an unflinching, R-rated approach to violence and nudity.
– Alfonso Cuarón's Children of Men (2006) is highlighted for its bleak, realistic vision of a near-future world gripped by mass infertility, described as more resonant now than at its release.
– The remaining three films in the ranking are not detailed in the available text.