Underground: Similar series
Miles Vorsokigan
by Lois McMaster Bujold
4.19 · 1054 ratings
science fiction · futuristic · military · audiobook · humor · mystery · length-medium · war · suspense · length-novella · m-f · short-king · length-long · behind-doors · competent heroine · alpha male · dual-pov · men in uniform · strong heroine · political-intrigue
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Sanctuary
by S.M. Olivier
4.36 · 165 ratings
men in uniform · dystopian · military · possessive hero · sunny hero · competent heroine · alpha male · poly · contemporary · explicit-plentiful · m-f-m · reverse harem · independent heroine · strong heroine · heroine athlete · friends to lovers · menage · slut-shaming · science fiction · death
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Captured Earth
by A.G. Wilde
3.84 · 163 ratings
science fiction · dystopian · audiobook · aliens · explicit-open-door · vengeance · creative-anatomy · strong heroine · length-medium · military · shapeshifters · suspense · alpha male · dual-pov · from hate to love · height-difference · m-f · fated-mates · war · cold hero
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Fallen Empire
by Lindsay Buroker
4.15 · 309 ratings
science fiction · futuristic · audiobook · military · cold hero · cheerful heroine · mature couple · competent heroine · bodyguard-hero · length-medium · glimpses-kisses · fighters · single-mother · fantasy · humor · m-f · aliens · length-novella · open-door · pirates
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Raider Warlords of the Vandar
by Tana Stone
4.08 · 207 ratings
aliens · audiobook · science fiction · alpha male · explicit-open-door · humor · length-short · from hate to love · military · length-medium · possessive hero · strong heroine · futuristic · fated-mates · virgin heroine · m-f · commander · first-person-pov · tall-heroine · curvy heroine
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Intersolar Union
by Etta Pierce
4.11 · 151 ratings
science fiction · explicit-open-door · m-f · aliens · non-human-hero · competent heroine · multicultural · possessive hero · rape-non-mc · length-medium · independent heroine · third-person-pov · slow burn · strong heroine · creative-anatomy · first-person-pov · human-trafficking · suspense · found-family · forced proximity
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Outcast
by Keri Arthur
4.06 · 59 ratings
mystery · paranormal · child-death · m-f · non-human-heroine · urban fantasy · shapeshifters · dystopian · vampires · science fiction · fighters · non-human-hero · length-medium · warrior-heroine · magic · death · futuristic · fantasy · strong heroine · audiobook
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Green Fields
by Adrienne Lecter
4.47 · 192 ratings
audiobook · horror · post-apocalyptic · science fiction · dystopian · length-medium · military · paranormal · length-long · abuse · suspense · mystery · dark · alpha male · bad boys
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Star Guardians
by Ruby Lionsdrake
4.13 · 98 ratings
science fiction · futuristic · aliens · audiobook · length-medium · non-human-hero · military · new adult · explicit-open-door · length-short · humor · rape-non-mc · misogyny
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Captive Mates
by Corin Cain
4.10 · 62 ratings
science fiction · reverse harem · poly · paranormal · fated-mates · length-medium · aliens · fantasy · length-short · military · futuristic · alpha male · m-m-f · menage · m-f-m · demons · cold hero · abuse · explicit-plentiful · shapeshifters
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Dogs of War
by J.M. Madden
4.50 · 24 ratings
military · suspense · science fiction · fantasy · futuristic · length-medium · length-novella · m-f · length-short · paranormal
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Shadow Zone Brotherhood
by Dalia Davies
3.91 · 17 ratings
height-difference · science fiction · m-f · survival · sweet-hero · aliens · length-medium · non-human-hero · military · explicit-plentiful · creative-anatomy · competent heroine · dual-pov · breeding · cheerful heroine · anal sex · fighters · double-penetration · sweet heroine · paranormal
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Zulir Warrior Mates
by Kate Rudolph
3.81 · 21 ratings
audiobook · military · science fiction · aliens · demons · paranormal · angels · length-short · fantasy · length-medium · explicit-open-door · from hate to love · bikers · heroine athlete · virgin heroine · fated-mates · height-difference · forced proximity
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Protectors
by Nana Malone
3.63 · 16 ratings
fantasy · contemporary · science fiction · futuristic · length-novella · audiobook · military · multicultural · young adult · superheroes · length-medium · paranormal · anthologies · suspense
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The Drift: Nova Force
by Susan Hayes
4.47 · 19 ratings
science fiction · explicit-open-door · military · audiobook · length-short · fantasy · futuristic · length-medium · slavery · tortured heroine · tortured hero · mental illness · vengeance · angst · abduction · dangerous heroine · warrior-heroine · past-abuse · caretaking · men in uniform
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Taurean Warriors
by Melody Beckett
4.00 · 10 ratings
military · science fiction · aliens · length-medium · non-human-hero · m-f · multicultural · dual-pov · futuristic · forced proximity · friends to lovers · shy heroine · men in uniform · length-short · war · dystopian · fantasy
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Ignisar
by Jess K. Hardy
4.50 · 8 ratings
science fiction · aliens · humor · military · length-medium · length-short · friends to lovers · m-f
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The Brajj
by Jacqueline Patricks
4.00 · 7 ratings
audiobook · military · science fiction · contemporary · futuristic · length-medium · horror · length-novella
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Project DEEP
by Becca Jameson
4.50 · 14 ratings
military · contemporary · futuristic · science fiction · length-medium · suspense · length-short · fantasy
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Rights of the Strong
by Ellen Stellar
4.50 · 6 ratings
futuristic · aliens · science fiction · military · length-medium · humor · sassy heroine · length-long
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The Persistence of Memory
by Karen Janowsky
4.17 · 6 ratings
superheroes · length-medium · paranormal · fantasy · time travel · science fiction · futuristic · urban fantasy · military · urban · m-m · queer · m-f
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Glory MC
by Ana Jolene
4.00 · 6 ratings
poor heroine · length-medium · new adult · dystopian · science fiction · futuristic · military · suspense · length-short · mma-boxing · fantasy
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