21st Testing Protocol: Similar series
Library Wars: Love & War
by Kiiro Yumi
4.31 · 329 ratings
dystopian · young adult · length-short · science fiction · contemporary · war · humor · m-f · multicultural · military · fantasy · political-intrigue · strong heroine · futuristic · glimpses-kisses · japan · office · competent heroine · east-asia · boss & employee
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Raider Warlords of the Vandar
by Tana Stone
4.09 · 220 ratings
aliens · science fiction · alpha male · from hate to love · explicit-open-door · humor · military · length-medium · length-short · possessive hero · m-f · fated-mates · futuristic · strong heroine · dual-pov · virgin heroine · commander · abduction · fantasy · erotica
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Pax Galactica
by Jenny Schwartz
4.23 · 46 ratings
length-short · science fiction · strong heroine · military · aliens · paranormal · monsters · fantasy · mafia · contemporary · christian · humor · new adult · sports · futuristic
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Warriors of the Lathar
by Mina Carter
4.16 · 322 ratings
science fiction · futuristic · aliens · non-human-hero · m-f · military · explicit-open-door · open-door · length-short · suspense · alpha male · length-novella · strong heroine · competent heroine · age difference · forced proximity · dual-pov · possessive hero · commander · length-medium
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The 1000 Revolution
by Pippa DaCosta
4.05 · 42 ratings
futuristic · military · length-short · science fiction · fantasy · m-f · dystopian · new adult · erotica
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The Sky Clan of the Taori
by Tana Stone
4.39 · 48 ratings
m-f · science fiction · aliens · vengeance · alpha male · length-short · military · strong heroine · fated-mates · time travel · length-medium · humor · age difference · dual-pov · insta-love · possessive hero · independent heroine · first-person-pov · futuristic · fantasy
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Scorch
by Toby Neal
4.39 · 35 ratings
suspense · military · multicultural · science fiction · dystopian · fantasy · futuristic · length-short · contemporary · length-medium
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TerraMates
by Lisa Lace
3.98 · 120 ratings
multicultural · futuristic · military · science fiction · suspense · length-short · aliens · length-medium · m-f · angels · vengeance · royalty · curvy heroine · pirates · strong heroine · non-human-hero · cruel hero · shapeshifters · war · bdsm
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Dragon's MatchMate Agency
by Maia Starr
4.27 · 43 ratings
suspense · shapeshifters · fantasy · paranormal · vampires · angels · humor · military · length-short · science fiction · western · m-f
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The D.I.R.E. Agency
by Joni Hahn
4.10 · 55 ratings
science fiction · futuristic · length-short · suspense · fantasy · military · superheroes · paranormal · time travel · length-novella · urban fantasy · erotica · betrayal · contemporary · bdsm
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Captive Mates
by Corin Cain
4.10 · 62 ratings
science fiction · poly · reverse harem · paranormal · length-medium · fated-mates · aliens · fantasy · military · length-short · alpha male · m-m-f · futuristic · bdsm · menage · non-human-hero · demons · shapeshifters · m-f-m · abuse
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Alpha Unknown
by Penelope Woods
3.33 · 18 ratings
dystopian · paranormal · science fiction · legends & fairy tales · futuristic · military · multicultural · length-short · fantasy · omegaverse
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Combined Operations
by Dorothy Grant
4.59 · 17 ratings
science fiction · military · futuristic · length-short · suspense · length-medium · aliens · fantasy
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Celestial Mates
by Marla Therron
3.58 · 45 ratings
science fiction · futuristic · military · aliens · length-short · slavery · alpha male · erotica · fantasy · open-door · length-epic · abduction
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Conquered World
by Elin Wyn
4.17 · 94 ratings
m-f · aliens · science fiction · length-short · non-human-hero · paranormal · multicultural · fantasy · open-door · military · career professional · alpha male · futuristic · competent heroine · cold hero · fighters · strong heroine · height-difference · graphic-violence · sassy heroine
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Zulir Warrior Mates
by Kate Rudolph
3.81 · 21 ratings
science fiction · military · demons · paranormal · angels · aliens · length-short · fantasy · length-medium · heroine athlete · from hate to love · virgin heroine · height-difference · explicit-open-door · forced proximity · bikers · fated-mates
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The Drift: Nova Force
by Susan Hayes
4.47 · 19 ratings
science fiction · explicit-open-door · military · length-short · fantasy · length-medium · futuristic · abduction · past-abuse · caretaking · tortured hero · m-f · men in uniform · slavery · vengeance · warrior-heroine · mental illness · angst · dangerous heroine · hurt-comfort
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The Pruxnae
by Lucy Varna
3.90 · 15 ratings
science fiction · length-short · futuristic · aliens · suspense · m-f · military · abduction · cold heroine · warrior-heroine · dual-pov · length-novella · alpha male · men in uniform · war · explicit-open-door
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Bride to an Alien Prince
by Kate Stevens
4.38 · 21 ratings
science fiction · aliens · length-short · military · humor · length-novella · m-f · royalty · open-door · non-human-hero
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Intergalactic Enosis: The Pyxis System
by Aurora Welkin
4.36 · 11 ratings
science fiction · multicultural · length-short · futuristic · fantasy · paranormal · military · shapeshifters · aliens · reverse harem · poly
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Dragons of Brevia: Shadow Squad
by Zoey Harper
4.14 · 7 ratings
fantasy · paranormal · shapeshifters · length-short · military · futuristic · science fiction · multicultural · witches
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