Sci-fi Hentai Games

Browse 15 Sci-fi hentai games, every one translated into English and free to download.

Most are RPG and Simulation titles, though you'll find plenty of other styles here.

Titles tagged Sci-fi frequently also feature 2D, Big Breasts, and Big Ass.

Sort by newest for the latest releases or by quality score to surface the best-rated first, with builds for Windows, Android, Mac, and Linux where available.

Related tags:2DBig BreastsBig AssOralVaginalAdventureMale ProtagonistUncensoredFemale ProtagonistMonsterRapeTentacle

Recently Added

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Lapiness Sapphire ~Ten Dimensions of Carnality~ - RPG hentai game thumbnail
Lapiness Sapphire ~Ten Dimensions of Carnality~
RPG
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Sexy Iron Maidens - Misc. hentai game thumbnail
Sexy Iron Maidens
Misc.
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Endless Forest Dream [v1.0.7] - RPG hentai game thumbnail
Endless Forest Dream [v1.0.7]
RPG
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Space Explorer Naysa – Escape from Restraint Erotic Alien - RPG hentai game thumbnail
Space Explorer Naysa – Escape from Restraint Erotic Alien
RPG
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Kame Paradise 2 Multiversex - RPG hentai game thumbnail
Kame Paradise 2 Multiversex
RPG
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The Soulstream Expansive - Simulation hentai game thumbnail
The Soulstream Expansive
Simulation
★ 95
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Mission Mermaiden ~Hasumi and the Deep Sea Sisters~ - Action hentai game thumbnail
Mission Mermaiden ~Hasumi and the Deep Sea Sisters~
Action
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Boobs vs Zombies - RPG hentai game thumbnail
Boobs vs Zombies
RPG
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Planet Stronghold 2 - RPG hentai game thumbnail
Planet Stronghold 2
RPG
★ 86
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MECHANICA: A Ballad of the Rabbit and Mercury - RPG hentai game thumbnail
MECHANICA: A Ballad of the Rabbit and Mercury
RPG
★ 84
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S.H.E.L.T.E.R. – An Apocalyptic Tale - Simulation hentai game thumbnail
S.H.E.L.T.E.R. – An Apocalyptic Tale
Simulation
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Titans Tower - Visual Novel hentai game thumbnail
Titans Tower
Visual Novel
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Primeval Planet: Angimanation - Action hentai game thumbnail
Primeval Planet: Angimanation
Action
★ 85
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DaiBanChou ~Big Bang Age~ - RPG hentai game thumbnail
DaiBanChou ~Big Bang Age~
RPG
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Trample on “Schatten!!” ~Kagefumi no Uta~ Revolution+ - Adventure hentai game thumbnail
Trample on “Schatten!!” ~Kagefumi no Uta~ Revolution+
Adventure
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