Sonar: Similar series
Starlight's Shadow
by Jessie Mihalik
4.06 · 181 ratings
aliens · science fiction · futuristic · military · found-family · strong heroine · independent heroine · sweet-hero · heroine sleuth · non-human-hero · length-long · competent heroine · slow burn · first-person-pov · war · from hate to love · open-door · dangerous heroine · forced proximity · multicultural
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Wires and Nerve
by Marissa Meyer
4.10 · 171 ratings
dystopian · futuristic · young adult · humor · shapeshifters · fantasy · werewolves · magic · urban fantasy · royalty · paranormal · science fiction · aliens · length-medium · mystery · length-short · steampunk · legends & fairy tales · war · glimpses-kisses
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Dark World Mates
by Olivia Riley
3.87 · 171 ratings
strong heroine · science fiction · aliens · m-f · military · graphic-violence · multicultural · monsters · alpha male · death · futuristic · non-human-hero · survival · possessive hero · slow burn · creative-anatomy · third-person-pov · forced proximity · abduction · horror
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Article 5
by Kristen Simmons
3.88 · 153 ratings
young adult · futuristic · dystopian · science fiction · fantasy · length-medium · length-long · war · tortured heroine · suspense · survival
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Rainshadow
by Jayne Castle
4.11 · 172 ratings
suspense · urban fantasy · futuristic · mystery · length-medium · dual-pov · magic · fantasy · paranormal · open-door · science fiction · contemporary · aliens · m-f · vampires · tycoon · demons · shapeshifters · witches · angels
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Brainship
by Anne McCaffrey
3.96 · 201 ratings
futuristic · science fiction · disabilities and marks · length-medium · aliens · length-long · m-f · pirates · military · war · fantasy · anthologies · bodyguard-hero · behind-doors · young adult · alpha male · strong heroine · non-human-hero · rape
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Confederation of Valor
by Tanya Huff
4.09 · 152 ratings
strong heroine · war · futuristic · military · aliens · science fiction · survival · length-medium · fantasy · humor · paranormal · length-long · queer · time travel · mystery · suspense · pirates · m-f
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The Generations Trilogy
by Scott Sigler
3.94 · 89 ratings
futuristic · glimpses-kisses · dystopian · science fiction · aliens · mystery · suspense · young adult · horror · survival · length-long · urban fantasy · war · length-medium · other-man-woman · contemporary · dark · love triangle
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Walker Saga
by Jaymin Eve
4.34 · 196 ratings
aliens · futuristic · young adult · science fiction · urban fantasy · length-medium · dystopian · contemporary · magic · new adult · fae · length-long · paranormal · angels · fantasy
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The Cage
by Megan Shepherd
3.75 · 82 ratings
futuristic · science fiction · dystopian · aliens · young adult · urban fantasy · fantasy · paranormal · mystery · length-long · contemporary · other-man-woman · love triangle · death · independent heroine · length-medium · forbidden love · pregnancy
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Theirs Not to Reason Why
by Jean Johnson
4.09 · 118 ratings
futuristic · military · science fiction · war · aliens · length-long · length-medium · time travel · urban fantasy
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Liaden Universe
by Sharon Lee
4.28 · 577 ratings
science fiction · futuristic · length-long · aliens · length-medium · paranormal · fantasy · young adult · military · behind-doors · competent heroine · humor · suspense · sweet-hero · angst · warrior-heroine · sweet heroine · mystery · strong heroine · secret child
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Three Worlds
by Jacquelyn Frank
3.96 · 66 ratings
m-f · contemporary · magic · urban fantasy · length-medium · science fiction · aliens · futuristic · tall-heroine · virgin heroine · war · erotica · alpha male · suspense · strong heroine · virgin hero · royalty · insta-love · tortured hero · historical
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Katherine "Kitty" Katt
by Gini Koch
4.13 · 269 ratings
science fiction · aliens · urban fantasy · length-long · futuristic · mystery · humor · non-human-hero · military · contemporary · m-f · paranormal · found-family · fantasy · other-man-woman · love triangle · strong heroine · neurodivergent · length-epic · shapeshifters
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Worldship Brides
by Sue Lyndon
3.78 · 78 ratings
alpha male · science fiction · spanking · aliens · creative-anatomy · anal sex · virgin heroine · m-f · non-human-hero · explicit-plentiful · fated-mates · futuristic · double-penetration · dual-pov · breeding · possessive hero · first-person-pov · height-difference · paranormal · age difference
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Star
by Susan Grant
3.93 · 87 ratings
futuristic · science fiction · paranormal · length-medium · fantasy · aliens · contemporary · strong heroine · explicit-open-door · m-f · length-novella · insta-love · length-epic · dystopian · third-person-pov · sports · friends to lovers · sweet-hero · sweet heroine · royalty
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Rebel Wing
by Tracy Banghart
4.18 · 36 ratings
young adult · military · futuristic · science fiction · dystopian · christian · other-man-woman · love triangle · new adult · war · length-medium · mystery · aliens · high fantasy · length-short
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The Ladyships
by Bex McLynn
4.01 · 31 ratings
military · aliens · science fiction · explicit-open-door · creative-anatomy · non-human-hero · abduction · pregnancy · futuristic · length-medium · dual-pov · cold heroine · slavery · men in uniform · sunny hero · black-mc · m-f · tall-heroine · independent heroine · length-short
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Harem Station
by J.A. Huss
4.10 · 61 ratings
science fiction · futuristic · time travel · length-medium · fantasy · paranormal · humor · aliens · from hate to love · demons · m-f · military · fated-mates · gifted heroine · new adult · war · first-person-pov · cruel hero · non-human-hero · non-human-heroine
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Betania Breed
by Jenny Foster
3.56 · 34 ratings
science fiction · futuristic · length-medium · aliens · insta-love · paranormal · fantasy · possessive hero · strong heroine · non-human-hero · dark · m-f · alpha male · creative-anatomy · suspense · commander · open-door · abduction · shapeshifters · length-short
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Tales of Tolari Space
by Christie Meierz
3.85 · 31 ratings
futuristic · science fiction · aliens · length-short · length-medium · slow burn · single-father · multicultural · tortured heroine · fantasy · paranormal · shy heroine · length-novella · non-human-hero
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The Sequencing Chronicles
by Elayna R. Gallea
4.01 · 19 ratings
dystopian · young adult · fantasy · science fiction · length-medium · futuristic · length-long · length-novella · christian
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