- Maat-ka-re. Memoirs of a Time Traveler.
- Mach's Legacy
- Mach's Mission
- Machina Obscura
- Machina Utopia
- Machine Girl Book 1: Welcome to the Machine
- Machine Man
- Machines
- Machines of the Little People
- Madness from the Inconstant Moon
- Magellan
- Magicka Apocalyptica
- MagTech Suit Up
- Malfunction
- Mammoth
- Mammuthus
- Maniacs: The Krittika Conflict
- Manifold: Origin
- Manifold: Space
- Manifold: Time
- Marcellus: The Mantle
- MARiiMO
- Mariner's Wake
- Marker Stone
- Market Forces
- Mars Born
- Mars Life
- Mars; A Traveler's Guide
- Martian Divides
- Marvelous Things
- MASTER PLAN
- Mate in Two Moves
- Materia non vitale
- Mathematics Of Eternity: Joe Ballen, Book One
- Maxwell's Demons
- McLaughlin
- Mech War For Humanity: The Galahad Initiative
- Megayear Future History
- Memoirs of a Mad Scientist One: Solarpunk Outlaw
- Memoirs of a Timelord
- Memoirs of Asylum: Janet Blair
- Memory 2.0
- Memory Machine: Birthday Killings
- Memory Stick
- Men Like Gods
- MENACING OPPOSITION
- Menelaus
- Merimnae
- Merimnae: Inbound
- Merimnae: Outbound
- Message from Ceti-Alpha 6
- Message from the Genorantans
- Met Chron New-Humans (Metamorphosis Chronicles Book 2)
- Metalheads & Meatheads
- Metallic Love
- Metamorph
- Metrópolis
- Micah
- Middle Distance
- Midnight Zone a Cade Rearden Thriller
- Midnight's Park
- Milay
- Milky Way Boogie
- Milky Way Tango
- Million Dollar Puppeteers
- Mind Dimensions Omnibus
- Mind Machines
- Mind Web
- Mindgate 1
- MindLink
- Mindset
- Mindweb
- Minerva
- Mining Games
- Miracle Cure
- Mirrors
- Misja specjalna. Część 2
- Missing Presumed Dead
- Mission
- Mission Blaue Sonne
- Mission du dernier recours