- Retrowave 2067: A Virtual Reality Adventure
- Rettungskreuzer Ikarus 1 - 10: Die Feuertaufe (und 9 weitere Romane)
- Rettungskreuzer Ikarus 11 - 20: Verschollen im Nexoversum (und 9 weitere Romane)
- Rettungskreuzer Ikarus 67: Sturm über Toruk
- Rettungskreuzer Ikarus 69: Clanhändler-Codex
- Rettungskreuzer Ikarus 72: Business Case
- Rettungskreuzer Ikarus 73: Exogenesis
- Rettungskreuzer Ikarus 76: Die Mission Direxdominatar
- Rettungskreuzer Ikarus 77: Dreißig Minuten
- Rettungskreuzer Ikarus 78: Die Seelenlosen
- Rettungskreuzer Ikarus 79: Der Boomium-Plan
- Rettungskreuzer Ikarus 80: An den Horizont
- Rettungskreuzer Ikarus 81: Kein Weg zu weit
- Rettungskreuzer Ikarus 82: Kein Schmerz zu tief
- Rettungskreuzer Ikarus 83: Kein Schrei zu laut
- Return
- Return (The Invasion Chronicles—Book Four): A Science Fiction Thriller
- Return Engagement
- Return Flight
- Return from the Apocalypse
- Return from the Inferno
- Return of Sky Ghost
- Return of the Alliance
- Return of the Anasazi
- Return of The Ancient Ones: A Science Fiction Dragon Novella
- Return of the Ancients: The Valkeryn Chronicles 1
- Return of the Fontalo
- Return of the Jedi: Star Wars: Episode VI
- Return of the Lost
- Return of the Star Raiders
- Return of the Vibrius
- Return of the Wick Chronicles Omnibus
- Return of the Yggdrasil
- Return To Alpha
- Return to Camerein
- Return to Dakistee
- Return to Darkness
- Return To Earth
- Return to Earth
- Return To Earth In A Space Suit
- Return to Eden
- Return to Isis
- Return to Kiana
- Return To Kiana
- Return To Kiana
- Return to Mars
- Return to Neverwylde
- Return to Neveryon
- Return to Oz
- Return to Paradise
- Return To Planet Sumer: Operation Shoestring
- Return To Sender
- Return to the Stars
- Return to Went
- Return to Woodbury
- Return To Xylanthia
- Return to Zarmina
- Return Trip - Halley's Casino III
- Return: Mate of the Cave Bear
- RETURN_TRUE; EDIT_FIELD; TRACE_MODE
- Returning
- Returning to Eagle Falls The Mystery Continues
- Reunited Hearts
- Reunited Worlds
- Rev (Book 1)
- Revelaciones en Allasneda
- Revelation
- Revelation Day
- Revelations
- Revelations
- Revelations of a Time Traveler
- Revelations: Osguards: Guardians of the Universe
- Revenant Syndrome: 01 Genesis
- Revenant Syndrome: 02. Patient Zero
- Revenant Syndrome: 03. Infection Vector
- Revenant I: Into the Abyss
- Revenge
- REVENGE
- Revenge Among the Stars
- Revenge At College (The Hypno-Talkers Of Zlar #3)
- Revenge is Sweet
- Revenge Of Jesus
- Revenge of the Alien Bugs
- Revenge Of The Damned
- Revenge of the Damned (Sten #5)
- Revenge of the Insect Man From Outer Space: A Humorous Short Story
- Revenge of the Puppet Master
- Revenge of the Spiders
- Revenge Point O
- Revenge to Philip K. Dick. A writer who was not present
- Revenge: Osguards: Guardians of the Universe
- Reversed Order Existence
- Revezia: Praxis of the Disenchanted
- Revival
- Revival (Debriefed)
- Revolt in 2100
- Revolt in the Ice Empire and three more stories
- Revolt on Alpha C
- Revolt on Vesta
- Revolution (Divided Elements Book 3)
- Revolution For Vengeance
- Revolution of Air and Rust
- Revolution Z
- Revolution's Reign
- Revolution's Rise
- Revolution's Shore
- Revolutionary
- Revory: Pawns of Bedlam
- Reward
- Reward for a Hero
- Reward for Retief
- Rewind without erase
- Rewired
- Rewriting Adam
- Rex Aftermath
- Rex Cresting
- Rex Equilibrium
- Rex ex Machina
- Rex Rising
- Rex tremendae maiestatis (Urania)
- Reynold's Home for Retired Time Travelers
- Rhea 41070
- Rhea's Vault
- Rho
- Rhodes
- Rhoe's Request
- Rhone
- Rhythm of the Imperium
- Rice Biotechnology and Genetic Engineering
- Rich Weed: The Complete Adventures