Friday Flashback: Future Fornication

The technician by BRK A special prize for a milestone customer on a literal-minded magic elevator yields some interesting results. 1,805 words Added Jun 2012 18k views 4.8 stars (10 votes) No comments yet •Cock Growth•Replication•Muscle Growth•Getting Taller•Size Increase•Nanotech•Selfcest•Complete•Set in the Future •M/M•M/M/M/...

Vision space by BRK Sent to explore an unknown, derelict spaceship in search of usable technology, a young marine unexpectedly discovers three sexy inhabitants, guardians of a secret no one could have imagined. 6,302 words Added Jun 2021 13k views 5.0 stars (11 votes) 2 comments •Cock Growth•Huge Cock•Hyper Cock•Hyper Muscle•Muscle Growth•Muscle/Strength•Transformation•Getting Taller•Giants•Size Decrease•Size Increase•Age Difference•Aliens•Space Travel•Complete•Set in the Future •M/M

Andro-Gro anonymous by LucaWLee Fresh out of cryosleep in the post-apocalyptic Southwest, Phoenix journeys with a hulking Kassian and a wolfish Fynn in search of an irresistible growth-inducing drug. 3 parts 6,673 words Added Jan 2023 8,005 views 5.0 stars (15 votes) 3 comments •Cock Growth•Huge Cock•Hyper Cock•Cum Milking•Hyper Cum•Hyper Muscle•Muscle Growth•Muscle/Strength•Set in the Future •M/M

Augmentations by Also Known As Pursuing a fantasy, a successful man hires an erotic partner who’s been augmented, but the kinds of pleasures his new lover can share with him are far beyond anything he’d imagined. 18 parts 99k words (#30) Added Jan 2014 50k views 4.3 stars (12 votes) 2 comments •Cock Growth•Huge Cock•Muscle Growth•Muscle/Strength•Muscle Worship•Man Scent•Getting Handsomer•Size Increase•Set in the Future •M/M

B.D.E. by Ziel While orbiting a nearby planet, the ship detects an unusual energy signature. Parker and Quill are sent down to investigate, but things take a turn for the smutty when Parker’s suit is compromised. 3,531 words Added Aug 2018 24k views 4.0 stars (7 votes) 1 comment •Cock Growth•Huge Balls•Huge Cock•Hyper Cock•Hyper Cum•Aliens•Space Travel•Set in the Future •M/M

Cybersex 2047 by Unknown Everything’s changed in the future, and that definitely includes what’s possible when it comes to sex. 2,199 words Added Jul 2013 14k views 5.0 stars (2 votes) No comments yet •Huge Cock•Set in the Future •M/M

Eggmen chronicles by brazboy 2122, eighty years after the anti-AI law, sixty years after the GMHs (genetically modified humans) became officially allowed. The human species counts 21 billion people living in three planets, but only about one in three are from traditional genetic lineages—more and more GMH have been created to fill the gap between supply and demand following the fertility crisis and the ever-growing need of populational expansion for labor and consumption. These new humans are just like the rest of us—except when they aren’t 10 parts 29k words Added Dec 2021 Updated 29 Jan 2022 16k views 4.7 stars (3 votes) 2 comments •Cock Growth•Huge Cock•Hyper Cock•Nipcocks•Hyper Cum•Pec Fucking•Muscle Growth•Muscle/Strength•Getting Taller•Plausible Size Difference•Size Increase•Set in the Future •M/M

Enhanced muscle and futuristic porn by Marquis de Rent In a futuristic space convoy, a young doctor builds his career on groundbreaking male enhancements. 5 parts 25k words Added Sep 2016 Updated 30 Sep 2016 39k views 4.4 stars (28 votes) 1 comment •Cock Growth•Huge Cock•Hyper Cock•Female to Male•Immobility•Muscle Growth•Muscle/Strength•Transformation•Plausible Size Difference•Size Increase•Nanotech•Space Travel•Set in the Future •M/M•M/M/M

Humbled by the himbo by MegaMaker Riley always felt like he stood out from the rest of the world due to the way he looks, and the way he thinks. 9 parts 22k words Added Feb 2024 Updated 2 Mar 2024 16k views 4.6 stars (51 votes) 13 comments •Cock Growth•Huge Balls•Ball Growth•Huge Cock•Hyper Cock•Hyper Cum•Hyper Muscle•Pec Fucking•Hyper Strength•Immobility•Muscle/Strength•Muscle Worship•Lycra/Spandex•Complete•Set in the Future •M/M

Jötnar by Maximalist In a future full of genetics-shaping possibilities, disgraced scientist Alexander Dickinson is offered a singular opportunity for redemption: a chance to salvage the very deep-space project he’d deliberately sabotaged by filling it full of gay hyper-muscle growth porn. 6 parts 27k words Added May 2024 Updated 8 Jun 2024 19k views 4.9 stars (56 votes) 2 comments •Cock Growth•Huge Balls•Ball Growth•Huge Cock•Hyper Cock•Hyper Cum•Nipple Emissions•Public Orgasm•Hyper Muscle•Muscle Growth•Muscle Worship•Increased Libido•A.I.-Controlled Change•Space Travel•Complete•Stories with Images•Set in the Future •M/M

Muscle bots by Meddler Incs Have a problem with your device? The Department of Cybernetic Deviations is here to help! 2 parts 1,955 words Added Jan 2018 11k views 4.5 stars (6 votes) No comments yet •Muscle/Strength•Androids/Cyborgs•Set in the Future •M/M

Pre-trip conditioning by WordShop As humans expand into space in the 22nd century, Gerry takes a job on a mining colony, little anticipating how much the experiience will change him. 4,059 words Added May 2003 14k views 4.8 stars (5 votes) No comments yet •Muscle/Strength•Hair Growth/Getting Hairy•Space Travel•Set in the Future •M

Recover and repair by jaysize14 Sex in the future is subject to technological advances, but bugs and upgrades will never go away. 1,574 words Added Aug 2015 13k views 5.0 stars (2 votes) No comments yet •Huge Cock•Androids/Cyborgs•Set in the Future •M/M

Space clones by Josh Dugan A brilliant cousin, like his spaceship, is full of himself, but there's room for one more. 2,338 words Added Nov 1998 11k views 4.2 stars (9 votes) No comments yet •Four Legs•Multiarm•Multilimb•Replication•Selfcest•Space Travel•Set in the Future •M/M

What happens on Venus by Malice Slashlover Garrett has a lot of questions about the Venusians he’s living with as an exchange student, but the one he most wants an answer to is — why do Venusian guys have three cocks? 2 parts 4,591 words Added Jul 2014 12k views 4.8 stars (4 votes) 1 comment •Multicock•Detachable•Aliens•Space Travel•Set in the Future •M/M