Portals of Time: Similar series
Ly-San-Ter Family
by Johanna Lindsey
3.95 · 56 ratings
historical · adult · sci-fi · historical-fiction · futuristic · fiction · aliens · paranormal · space · time-travel · book · steamy · romance · europe · warriors · action-adventure · humor · medieval · alpha-mc · scandinavia
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War Eternal
by M.R. Forbes
4.19 · 151 ratings
invasion · aliens · fiction · space-opera · soldiers · sci-fi · space · adult · space-fleet · military · violent-conflict · book · war · time-travel · action-adventure · first-contact · audiobook · galactic-empire · futuristic · colonization
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The Noon Universe
by Arkady Strugatsky
4.13 · 111 ratings
space · fiction · adult · sci-fi · book · classics · audiobook · literary · action-adventure · 20th-century · contemporary · dystopia · time-travel · politics · aliens · satire · post-apocalyptic · literary-fiction · medieval · utopia
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MacLeod
by Lynn Kurland
4.14 · 206 ratings
paranormal · time-travel · romance · adult · sci-fi · fiction · historical · historical-fiction · scotland · united-kingdom · british-isles · europe · medieval · magic · book · supernatural · ghosts · mystery · action-adventure · womens-fiction
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Doctor Who
by Jonathan Morris
3.88 · 89 ratings
time-travel · sci-fi · action-adventure · fiction · audiobook · aliens · space · young-adult · book · adult · mystery · anthologies · historical · children · humor · 21st-century · paranormal · military · historical-fiction · death
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Belisarius
by Eric Flint
4.22 · 113 ratings
historical-fiction · military · historical · adult · violent-conflict · war · alternate-history · fiction · action-adventure · time-travel · book · sci-fi · space · space-opera · dark-fantasy · horror · hard-sci-fi · medieval · box-set · audiobook
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Geek Girls
by Gina Lamm
3.35 · 35 ratings
fiction · humor · romance · book · industrial-era · regency · time-travel · historical-fiction · adult · historical · sci-fi · paranormal · action-adventure · womens-fiction · literary-fiction · england · fairy-tale · urban · urban-fantasy · aristocracy
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Transformers Movie Tie-In Novels
by Peter David
3.93 · 58 ratings
adult · sci-fi · fiction · action-adventure · mystery · military · violent-conflict · comics · robots · crime · dystopia · cyberpunk · literary · classics · book · time-travel · historical · high-school · children · friendship
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Orion
by Ben Bova
3.73 · 48 ratings
adult · sci-fi · alternate-history · fiction · action-adventure · time-travel · book · technology · audiobook · hard-sci-fi · historical-fiction · myths · military · violent-conflict · epic · space-opera · supernatural · anthologies · war
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City of God
by Randall Ingermanson
4.19 · 26 ratings
time-travel · book · literary-fiction · futuristic · spirituality · fiction · action-adventure · suspense · sci-fi · historical · adult · christian · historical-fiction · religion · female-author · alternate-history · magical-realism
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Descend
by David Burke
4.24 · 42 ratings
litrpg · audiobook · harem · book · adult · fiction · supernatural · virtual-reality · steamy · polyamory · magic · aliens · action-adventure · fantasy · bisexuality · drama · steampunk · apocalyptic · paranormal · dungeons-dragons
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Arturo Sandus
by Peter Rhodan
4.27 · 57 ratings
adult · sci-fi · fiction · action-adventure · alternate-history · time-travel · book · violent-conflict · litrpg · historical-fiction · war · arthurian · historical · male-mc · christian · military · roman-empire · slavery · space · ancient-civilization
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Music and Murder
by Eric Flint
4.04 · 24 ratings
law-enforcement · time-travel · mystery · action-adventure · fiction · alternate-history · sci-fi · adult · historical · police-procedural · historical-fiction · book · crime · single-planet · early-modern · audiobook · family · war · anthologies · hard-sci-fi
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Thunder
by James F. David
3.67 · 23 ratings
action-adventure · fiction · book · animals · time-travel · adult · dystopia · sci-fi · prehistoric · aliens · invasion · post-apocalyptic · apocalyptic · technothriller · violent-conflict · space · alternate-history · multiverse · hard-sci-fi · terrorism
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Independence Day
by Dean Devlin
3.70 · 39 ratings
fiction · action-adventure · sci-fi · aliens · book · invasion · futuristic · adult · violent-conflict · military · time-travel · post-apocalyptic · cyberpunk · space · super-powered · first-contact · space-fleet · contemporary · humor · alternate-history
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Time Walkers
by E.B. Brown
4.11 · 45 ratings
romance · time-travel · paranormal · fiction · historical-fiction · historical · sci-fi · book · ancient-civilization · poc-mc · adult · indigenous-mc · western · alpha-mc · box-set · action-adventure · industrial-era · young-adult · death · supernatural
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Order of the Dragon Knights
by Mary Morgan
4.27 · 30 ratings
book · time-travel · romance · myths · dragons · paranormal · fiction · medieval · europe · adult · historical · magic · historical-fiction · scotland · united-kingdom · british-isles · magical-realism · audiobook · fae · suspense
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The Catherine Kimbridge Chronicles
by Andrew Beery
4.02 · 50 ratings
military · space · violent-conflict · sci-fi · fiction · book · space-opera · action-adventure · space-fleet · soldiers · adult · aliens · female-mc · young-adult · super-powered · time-travel · war · children-books · historical · invasion
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Richards & Klein
by Guy Haley
3.58 · 12 ratings
action-adventure · fiction · mystery · sci-fi · adult · ai · cyberpunk · industrial-era · steampunk · hard-sci-fi · exploration · robots · space-travel · historical · time-travel · book · virtual-reality · dystopia · space · audiobook
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The MacLomain Universe
by Sky Purington
4.19 · 81 ratings
paranormal · time-travel · historical · adult · fiction · medieval · europe · sci-fi · dragons · book · shapeshifters · romance · historical-fiction · scotland · action-adventure · united-kingdom · british-isles · scandinavia · psychics · drama
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Off World
by Stephanie Vaughan
3.50 · 10 ratings
futuristic · space · adult · sci-fi · fiction · mlm · book · romance · military · paranormal · action-adventure · aliens · steamy · lgbtq · time-travel · violent-conflict · slavery · dark · war · kidnapping
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Langston Brothers
by Melissa Lynne Blue
3.85 · 13 ratings
romance · book · action-adventure · fiction · historical-fiction · violent-conflict · adult · historical · civil-war · military · steamy · time-travel · industrial-era · western · sci-fi · suspense · paranormal · womens-fiction · drama · war
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Beyond Human
by Nina Croft
4.00 · 7 ratings
book · romance · fiction · action-adventure · psychics · paranormal · suspense · new-adult · adult · military · time-travel · urban-fantasy · supernatural · sci-fi · steamy · contemporary · war · espionage · revenge · super-powered
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Ray Bradbury Presents
by Stephen Leigh
3.38 · 8 ratings
fiction · book · action-adventure · adult · sci-fi · animals · contemporary · time-travel · young-adult · space · male-mc · galactic-empire · prehistoric · pulp · monsters
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