Theirs Not to Reason Why: Similar series
The Illuminae Files
by Amie Kaufman
4.35 · 192 ratings
young adult · futuristic · science fiction · glimpses-kisses · dystopian · found-family · war · aliens · dark · fantasy · mystery · suspense · tearjerkers · competent heroine · sassy heroine · slow burn · contemporary · m-f · death · strong heroine
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The Aurora Cycle
by Amie Kaufman
4.10 · 114 ratings
magic · found-family · young adult · suspense · aliens · humor · mystery · dystopian · science fiction · new adult · futuristic · military · death · dual-pov · war · strong heroine · dark · behind-doors · fae · from hate to love
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The Firebird Chronicles
by T.A. White
4.35 · 184 ratings
military · magic · science fiction · aliens · futuristic · alpha male · strong heroine · urban fantasy · slow burn · competent heroine · open-door · dystopian · glimpses-kisses · war · from hate to love · m-f · warrior-heroine · age difference · paranormal · mystery
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The League
by Sherrilyn Kenyon
4.30 · 457 ratings
urban fantasy · science fiction · futuristic · aliens · tortured hero · m-f · explicit-open-door · military · contemporary · suspense · alpha male · royalty · forced proximity · third-person-pov · dual-pov · competent heroine · independent heroine · strong heroine · past-abuse · fighters
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Paradox
by Rachel Bach
4.05 · 87 ratings
aliens · strong heroine · urban fantasy · military · futuristic · war · science fiction · mystery · young adult · shapeshifters · slow burn · competent heroine · bodyguard-heroine · historical · warrior-heroine · pirates · magic · fighters · open-door · dystopian
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Constellation
by Claudia Gray
4.01 · 70 ratings
science fiction · aliens · dystopian · glimpses-kisses · suspense · young adult · military · futuristic · war · strong heroine · angst · mystery · independent heroine · from hate to love · death · himbo · found-family · historical · forced proximity · dangerous heroine
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Insignia
by S.J. Kincaid
4.26 · 62 ratings
dystopian · science fiction · war · young adult · futuristic · military · male-pov · humor · fantasy · mystery
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Junkyard Cats
by Faith Hunter
4.13 · 50 ratings
science fiction · urban fantasy · dystopian · war · futuristic · military · aliens · fantasy · suspense · bikers · paranormal
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Dred Chronicles
by Ann Aguirre
4.00 · 47 ratings
dystopian · urban fantasy · m-f · futuristic · aliens · science fiction · war · military · suspense · strong heroine · dark · outlaw-heroine · alpha male · contemporary · tortured heroine
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The Mandrake Company
by Ruby Lionsdrake
3.95 · 126 ratings
military · science fiction · futuristic · explicit-open-door · dual-pov · m-f · third-person-pov · competent heroine · independent heroine · fighters · slow burn · fantasy · new adult · war · aliens · men in uniform · alpha male · survival · forced proximity · strong heroine
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Galactic Conspiracies
by Rob Colton
4.02 · 35 ratings
science fiction · aliens · futuristic · alpha male · insta-love · military · queer · m-m · abduction · secret child · height-difference · working class hero · pregnancy · explicit-open-door · abuse · fated-mates
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Rebel Wing
by Tracy Banghart
4.21 · 30 ratings
dystopian · young adult · military · futuristic · science fiction · new adult · war · christian · mystery · love triangle · aliens · other-man-woman · high fantasy
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Zoran Warriors
by Luna Hunter
4.04 · 27 ratings
humor · futuristic · military · new adult · science fiction · aliens · non-human-hero · alpha male · erotica
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The Lost Fleet
by Sarah Hawke
4.25 · 24 ratings
harems · science fiction · explicit-plentiful · aliens · futuristic · military · breeding · male-pov · war · poly · pregnancy · m-f-f · anal sex
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Mating Wars
by Aya Morningstar
3.91 · 34 ratings
futuristic · humor · military · science fiction · aliens · multicultural · shapeshifters · erotica · alpha male · m-f · non-human-hero
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Interstellar Brides: Ascension Saga
by Grace Goodwin
4.55 · 71 ratings
military · science fiction · futuristic · multicultural · aliens · non-human-hero · mystery · fated-mates · war · fantasy · possessive hero · dual-pov · paranormal · praise-kink · abduction · aristocratic heroine · strong heroine · suspense · non-human-heroine · sassy heroine
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Between Rebels
by Skye MacKinnon
3.80 · 10 ratings
science fiction · aliens · futuristic · reverse harem · military · poly · fighters · abuse · humor · multicultural · abduction · tortured heroine · erotica · alpha male · m-f · strong heroine
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Olympia Alien Mail Order Brides
by K. Cantrell
3.28 · 9 ratings
science fiction · aliens · military · futuristic · contemporary · sunny hero · m-f · non-human-hero · working class heroine · competent heroine · himbo · insta-love · pregnancy · explicit-plentiful · explicit-open-door · humor · arranged marriage · small town · independent heroine
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Alien Fated Mates for Ajnara Warriors
by Pearl Tate
4.33 · 12 ratings
dystopian · science fiction · aliens · humor · sweet heroine · military · suspense · slow burn · abuse · fated-mates · war · abduction · multicultural · curvy heroine · alpha male · erotica · dark · contemporary · insta-love · cold hero
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