- Stranger That Saved Her
- Stranger Things Happen
- Strangers
- Strangers In the Gale
- Strangers In The Night
- Strangers, Neighbors and Aliens. Oh, My! Book I
- Strangers, Neighbors and Aliens. Oh, My! Book II
- Strangers, Neighbors and Aliens. Oh, My! Book III
- Stranglehold
- Stranglers' Moon
- Strani mondi (Urania)
- Strani universi
- Straordinari
- Stratagem - Journey to Nyorfias Book 3
- Strawberry Dragon
- Straying from the Path
- Straße ins All 10: Tor der Galaxien
- Straße ins All 11: Kosmisches Heiligtum
- Straße ins All 12: Genesis in fremder Galaxis
- Straße ins All 13: Kein Zutritt für Roboter
- Straße ins All 14: Eine Festung für die Ewigkeit
- Straße ins All 15 - Sternenkönig und Götterbote
- Straße ins All 16: Schlacht in ferner Galaxie
- Straße ins All 17: Das Weltentor ist ein Moloch
- Straße ins All 18: Befreit die Erde!
- Straße ins All 19: Die Bombe des Geistes
- Straße ins All 1: Rebellen unter ferner Sonne
- Straße ins All 20: Das Psi-Schiff der Fremden
- Straße ins All 21: Im Orbit der Wüstenwelt
- Straße ins All 22: Kosmisches Sakrileg
- Straße ins All 23: Böse Macht im Weltraum
- Straße ins All 24: Das dritte Level kosmischer Intrigen
- Straße ins All 25: Das Zentrum der Unendlichkeit
- Straße ins All 26: Ein Exodus im Paralleluniversum
- Straße ins All 27: Der Mutant und die Invasion
- Straße ins All 28: Das kosmische Erbe der Menschheit
- Straße ins All 29: Pranumpal und die Jahrhundert-Frist
- Straße ins All 2: Das Portal der Sternengötter
- Straße ins All 30: Vorstoß zur Zentralwelt
- Straße ins All 31: Ein dunkler Nebel in fremder Galaxis
- Straße ins All 38: Ein Commander kehrt zurück
- Straße ins All 39: Jenseits des Sternenschleiers
- Straße ins All 3: Zwischen den Sternen unterwegs
- Straße ins All 40: Die größte Macht in der Galaxis
- Straße ins All 41: Im kosmischen Meer
- Straße ins All 4: Mission eines Sternengottes
- Straße ins All 5: Götterschiff in fremder Galaxis
- Straße ins All 6: Rote Sonne im Multiversum
- Straße ins All 7: Krieg in einer fernen Galaxis
- Straße ins All 8 - Ein alter Feind im Kosmos
- Straße ins All 9: Künstliche Intelligenz in ferner Galaxis
- Straße ins All 9: Künstliche Intelligenz in ferner Galaxis
- Street Stories: Pro & Con
- Street- Precognition
- Street: Clairvoyance
- Streetlethal
- Streets Running Like a River
- Strength
- Strength of Stones
- Striding Forth
- Strike Dog
- Strike Force Retaliation: The Relissarium Wars Space Opera, Part 3
- Strike the Blood, Vol. 1 (light novel)
- Strike the Blood, Vol. 10 (light novel)
- Strike the Blood, Vol. 11 (light novel)
- Strike the Blood, Vol. 12 (light novel)
- Strike the Blood, Vol. 13 (light novel)
- Strike the Blood, Vol. 14 (light novel)
- Strike the Blood, Vol. 15 (light novel)
- Strike the Blood, Vol. 16 (light novel)
- Strike the Blood, Vol. 17 (light novel)
- Strike the Blood, Vol. 18 (light novel)
- Strike the Blood, Vol. 19 (light novel)
- Strike the Blood, Vol. 2 (light novel)
- Strike the Blood, Vol. 20 (light novel)
- Strike the Blood, Vol. 3 (light novel)
- Strike the Blood, Vol. 4 (light novel)
- Strike the Blood, Vol. 5 (light novel)
- Strike the Blood, Vol. 6 (light novel)
- Strike the Blood, Vol. 7 (light novel)
- Strike the Blood, Vol. 8 (light novel)
- Strike the Blood, Vol. 9 (light novel)
- Striketeam Book One
- Striketeam Book Three: Whale Song
- Striking Deep
- Striking Fire
- Striking Freedom
- Striking Mars
- Strings
- Strip Poker mit Aliens
- Strisciavano sulla sabbia (Urania)
- Strogs
- STROMATA. Сборник рассказов
- Strong Bikers
- Strong Willed
- Structural Defect
- Stryker Team: The Complete Series
- Strykers
- Strážcovia Varadína
- Ströme im All
- Stuck
- Stuck in the Astral with You: Mission 14
- Stupendous Chris Jay
- Stuttering Back: Fast Forward
- Stuzzichini narrativi sotto l'ombrellone
- STYx
- Störfall
- Střepy v prachu
- Su la testa (Urania)
- Suave Rob's Amazing Ass-Saving Association
- Suave Rob's Double-X Derring-Do
- Suave Rob's Rough-n-Ready Rugrat Rapture
- Sub Martis
- Sub-Textual Evidence for the Existence of Alien Life and the Extrapolation of Internet Protocols
- Subject to Change
- Subject to Change and two more stories
- Subjected: Parallax
- Sublime Intervention
- Submerged City
- Submerged, Northern Currents
- Subroutines - Episode II
- Subspace Cadet (a Science Fiction BDSM novella)
- Subspace Explorers
- Substance of Fire
- Subterraneans (I Am Mercury Series - Book 3)
- Subterraneus
- Subtle Movements
- Subversion
- Subversive and seven more stories Vol I
- Suchscheinwerfer
- Sucker Punch
- Sudden Darkness
- Sudden Silence
- Suddenly
- Suddenly There Were Dragons
- Suerte de la cabeza #7777
- Sufficiently Advanced Technology
- Sugar Pines
- Sugar Time
- Sugure Sweetheart Hana
- Suicide Kings
- Suited
- Suivre les plans
- Sull'orlo della follia
- Sulle ali della notte
- Sullivan's Gift
- Sullivan's Run
- Sullivan's Stand
- Summary of Margaret Atwood’s The Handmaid’s Tale by Swift Reads
- Summer Blast 2019: Collection Of Science Fiction, Fantasy, & Horror Books
- Summer Crash (Zerralon 1.1)