Callisto: Similar series
For the Love of Aliens
by C.M. Stunich
4.30 · 192 ratings
survival · mental-trauma · poly · breeding · insta-love · anal sex · dual-pov · angst · first-person-pov · caretaking · non-human-hero · working class heroine · competent heroine · explicit-plentiful · forbidden love · human-trafficking · aliens · futuristic · tortured hero · fetish
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Across the Universe
by Beth Revis
3.85 · 289 ratings
futuristic · dystopian · science fiction · young adult · aliens · mystery · male-pov · suspense · dual-pov · glimpses-kisses · length-long · length-novella · love triangle · war · fantasy · length-medium · behind-doors · insta-love · other-man-woman · contemporary
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Mates of the Domini
by Talia Rhea
3.98 · 198 ratings
explicit-plentiful · non-human-hero · breeding · m-f · dual-pov · third-person-pov · abduction · creative-anatomy · science fiction · aliens · length-long · pregnancy · multicultural · hurt-comfort · sweet heroine · fated-mates · alpha male · contemporary · curvy heroine · politician
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Ruthless Warlords
by Alison Aimes
3.78 · 138 ratings
science fiction · fated-mates · omegaverse · non-human-heroine · mafia · aliens · futuristic · alpha male · third-person-pov · praise-kink · vengeance · tortured heroine · possessive hero · paranormal · non-human-hero · gifted heroine · dystopian · multicultural · tortured hero · sweet heroine
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Dragon Lords of Valdier
by S.E. Smith
4.07 · 369 ratings
science fiction · aliens · futuristic · non-human-hero · shapeshifters · dragon shifter · alpha male · explicit-open-door · m-f · fated-mates · length-novella · length-medium · strong heroine · independent heroine · possessive hero · erotica · open-door · magic · competent heroine · m-f-m
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Not Your Mama's Alien Romance
by Alisha Sunderland
3.96 · 50 ratings
fated-mates · werewolves · shapeshifters · science fiction · aliens · m-f · paranormal · dangerous heroine · commander · strong heroine · non-human-heroine · non-human-hero · futuristic · tall-heroine · first-person-pov · war · alpha male · possessive hero · explicit-plentiful · creative-anatomy
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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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Phantom Warriors
by Jordan Summers
3.60 · 63 ratings
futuristic · science fiction · aliens · m-f · shapeshifters · length-novella · contemporary · length-short · vampires · indigenous-mc · shy heroine · alpha male · urban fantasy · legends & fairy tales
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Primal Planet
by Loki Renard
3.64 · 37 ratings
science fiction · explicit-plentiful · length-short · bdsm · commander · suspense · contemporary · breeding · alpha male · m-f · futuristic · from hate to love · captive · aliens · spanking · sweet heroine · sassy heroine · curvy heroine · outlaw-heroine · non-human-hero
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Star Brides
by Solange Ayre
3.01 · 27 ratings
length-novella · contemporary · m-f · aliens · futuristic · science fiction · breeding · paranormal · erotica · fantasy · abduction
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Interstellar Brides: Ascension Saga
by Grace Goodwin
4.30 · 113 ratings
military · science fiction · aliens · multicultural · futuristic · length-novella · non-human-hero · aristocratic heroine · fated-mates · explicit-open-door · possessive hero · strong heroine · mystery · suspense · sassy heroine · non-human-heroine · m-f · praise-kink · gifted heroine · spanking
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Men of Omaron
by Juno Wells
4.01 · 31 ratings
science fiction · futuristic · military · fantasy · length-novella · aliens · length-short · alpha male · m-f · pregnancy · dual-pov · royalty · third-person-pov · explicit-open-door
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Brace for Humanity
by Viola Grace
4.09 · 32 ratings
futuristic · non-human-hero · science fiction · length-novella · aliens · m-f · working class heroine
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Centauri Captives
by Kallista Dane
4.29 · 42 ratings
aliens · science fiction · length-novella · futuristic · military · m-f · length-short · non-human-hero
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Albaterra Mates
by Ashley L. Hunt
3.91 · 23 ratings
science fiction · aliens · futuristic · length-novella · m-f · erotica · fantasy · alpha male · suspense · length-long · paranormal · anthologies · length-medium · mystery · military
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Queens Of Draxos
by Scarlett Grove
4.15 · 13 ratings
science fiction · futuristic · length-novella · aliens · demons · paranormal · fantasy · humor · military · shapeshifters · multicultural
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Black Planet
by Belinda McBride
3.71 · 7 ratings
science fiction · length-novella · paranormal · aliens · futuristic · menage · multicultural · fantasy
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Alien Warrior Brides
by Taylor Neptune
3.73 · 15 ratings
science fiction · aliens · military · futuristic · new adult · humor · multicultural · length-novella · length-short
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