Genre · ranked
The best alternate history series of all time
24 ranked · updated June 2026
These series masterfully manipulate the fabric of reality, using temporal shifts and divergent timelines to explore deep-seated human anxieties. By blending historical revisionism with speculative fiction, these narratives challenge our perception of cause and effect while delivering compelling character studies within worlds that are hauntingly familiar yet fundamentally altered.
How this ranking works
Ranked by a Bayesian-weighted score (rating average + rating count) across series classified as Alternate History.
Code Geass: Lelouch of the Rebellion
This series earns its top spot by masterfully weaving high-stakes political rebellion into a meticulously crafted dystopian vision of a conquered Japan.
Loki
Michael Waldron
Loki secures its position through a brilliant exploration of bureaucratic absurdity and the existential struggle between predetermined fate and individual free will.
Fringe
Alex Kurtzman
Fringe excels by grounding its complex parallel universe conspiracies in the deeply emotional and evolving relationships of its central investigative trio.
What If...?
This anthology earns its place by creatively deconstructing iconic superhero tropes to reveal the profound, often tragic consequences of single divergent choices.
Project Blue Book
David O'Leary
Project Blue Book succeeds by grounding its government conspiracy narrative in the historical tension between Cold War skepticism and genuine paranormal curiosity.
Saga of Tanya the Evil
The series stands out for its jarring, darkly comedic juxtaposition of a modern salaryman's consciousness trapped within the brutal realities of magical warfare.
Quantum Leap
Donald P. Bellisario
Quantum Leap remains a classic for its poignant, episodic focus on the moral imperative to right historical wrongs through involuntary body-swapping.
Familiar Wife
Lee Sang-yeob
Familiar Wife earns its spot by offering a grounded, relatable look at how a second chance at life can fundamentally alter one's personal identity.
11.22.63
The series is notable for its tense moral dilemma, forcing the protagonist to weigh the fate of history against his own happiness.
The Lost Room
Christopher Leone
The Lost Room earns its place through a unique, reality-bending premise that turns mundane objects into gateways for a dangerous, hidden universe.
Life on Mars
Matthew Graham
Life on Mars is essential viewing for its masterful use of cultural clash and nostalgia to challenge a modern detective's worldview in 1973.
Ashes to Ashes
Ashley Pharoah
Ashes to Ashes succeeds by expanding on its predecessor's foundation, using the aesthetic and social shifts of the eighties to drive its mystery.
For All Mankind
Ronald D. Moore
For All Mankind earns its spot by presenting a hopeful, high-stakes vision of global progress fueled by an uninterrupted, competitive space race.
Watchmen
Damon Lindelof
Watchmen is a standout for its bold, thematic reimagining of historical trauma and systemic racism through the lens of a superhero noir.
Sliders
Tracy Tormé
Sliders earns its reputation by exploring the infinite possibilities of the multiverse and the inherent moral dilemmas of constant interdimensional travel.
Common questions
What are some good TV shows about the space race in alternate history?
For All Mankind is a leading choice in this genre. It presents an aspirational world where the space program remains a top priority, exploring the lives of astronauts and engineers as they navigate a technologically advanced version of the Cold War.
Are there any series where characters travel to parallel universes?
Yes, several series explore this concept. Fringe features characters uncovering mysteries across parallel dimensions, while Sliders follows a group of travelers as they jump between an infinite number of Earths, each with its own unique history and social structure.
Which shows involve time travel to change historical events?
Several notable series tackle this theme. 11.22.63 features a man traveling back to prevent the Kennedy assassination, while Quantum Leap follows a scientist who jumps into the past to fix historical mistakes and right wrongs throughout his own lifetime.