Movies Like Alien Portals: Giants, Aliens and Strange Creatures

If you liked Alien Portals: Giants, Aliens and Strange Creatures (2023), a documentary movie directed by O.H. Krill, here are 20 movies with a similar feel, based on TMDB's recommendations. Each one links to its cast, trailer and where it's streaming.

1
Above Majestic (2018)
★ 7.4/10Also documentary
A look at the origins, history and conspiracies behind the "Majestic 12", a clandestine group of military and corporate figureheads charged with reverse-engineering extraterrestrial technology.
2
Elstree 1976 (2015)
★ 6.2/10Also documentary
A documentary about ten very different lives connected by having appeared onscreen wearing masks or helmets in Star Wars.
3
Capital in the Twenty-First Century (2019)
★ 6.5/10Also documentary
Film adaptation of French economist Thomas Piketty's ground-breaking global bestseller of the same name: an eye-opening journey through wealth and power.
4
Hell House (2001)
★ 6.4/10Also documentary
A look at the "Hell House" performed annually in October by the youth members of Trinity Church (Assemblies of God) in Cedar Hill, Texas (a Dallas suburb) — seen by over 10,000 visitors each year.
5
Unknown: Cave of Bones (2023)
★ 7.1/10Also documentary
Scientists examine underground clues from over 250,000 years ago that raise questions about our early relatives — and what it truly means to be human.
6
The Captains (2011)
★ 6.4/10Also documentary
The Captains is a feature-length documentary film written and directed by William Shatner. The film follows Shatner as he interviews the other actors who have portrayed starship captains in the Star Trek franchise.
7
The Mole: Undercover in North Korea (2020)
★ 7.1/10Also documentary
A real-life undercover thriller about two ordinary men who embark on an outrageously dangerous ten-year mission to penetrate the world's most secretive and brutal dictatorship: North Korea.
8
The Secret (2006)
★ 6.6/10Also documentary
Interviews with leading authors, philosophers and scientists, with an in-depth discussion of the Law of Attraction. The audience is shown how they can learn and use 'The Secret' in their everyday lives.
9
The Crystal Calls - Making The Dark Crystal: Age of Resistance (2019)
★ 7.5/10Also documentary
Go behind the scenes with stars, puppeteers and creators as they bring Jim Henson's magical world of Thra back to life in a sweeping fantasy series.
10
Looking for Richard (1996)
★ 6.8/10Also documentary
Al Pacino's deeply-felt rumination on Shakespeare's significance and relevance to the modern world through interviews and an in-depth analysis of "Richard III."
11
180° South (2010)
★ 7.2/10Also documentary
The film follows adventurer Jeff Johnson as he retraces the epic 1968 journey of his heroes Yvon Chouinard and Doug Tompkins to Patagonia.
12
Billie Eilish - Hit Me Hard and Soft: The Tour (Live in 3D) (2026)
★ 8.4/10Also documentary
Captured during Billie Eilish's sold-out world tour, a concert experience from one of the most celebrated and successful artists of her generation, presented in immersive 3D.
13
I Am Heath Ledger (2017)
★ 7.4/10Also documentary
The life and career of an actor, artist, and icon. His own journey through his own camera.
14
Objectified (2009)
★ 7.1/10Also documentary
A feature-length documentary about our complex relationship with manufactured objects and, by extension, the people who design them.
15
Western Stars (2019)
★ 7/10Also documentary
The incomparable Bruce Springsteen performs his critically acclaimed latest album and muses on life, rock, and the American dream, in this intimate and personal concert film co-directed by Thom Zimny and Springsteen…
16
Beyond Infinity: Buzz and the Journey to Lightyear (2022)
★ 7/10Also documentary
Explore the evolution of Buzz Lightyear from toy to human in the making of Pixar’s Lightyear. Dive into the origin and cultural impact of everyone’s favorite Space Ranger, the art of designing a new “human Buzz,” and…
17
Hawking (2013)
★ 7.6/10Also documentary
The extraordinary story of the planet’s most famous contemporary scientist, told in his own words and by those closest to him. Made with unique access to Hawking’s private life, this is an intimate and moving journey…
18
What We Left Behind: Looking Back at Star Trek: Deep Space Nine (2018)
★ 7.1/10Also documentary
A documentary exploring the legacy of Star Trek: Deep Space Nine, the reasons it went from the black sheep of Star Trek to a beloved mainstay of the franchise, and a brainstorm with the original writers on what a…
19
Voyage of Time: The IMAX Experience (2016)
★ 6.9/10Also documentary
A celebration of the universe, displaying the whole of time, from its start to its final collapse. This film examines all that occurred to prepare the world that stands before us now: science and spirit, birth and…
20
56 Up (2012)
★ 7.2/10Also documentary
When a cross-section of seven-year-olds were interviewed for 7 Up in 1964 it was immediately evident that their social backgrounds influenced their attitudes towards life. While the upper class children were confident…