Overview

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You are a man or woman (your choice) who is out of options. One day you are given an opportunity to work at a mysterious complex. The offer is also for your girlfriend to join you. The decision if she does is up to you. The complex is attempting to make a new genetically superior race. Stronger, smarter and far more virile than an average human…Oh, and they are Futas. They have one drawback their cum becomes addictive after contact. You need to keep the girls happy so you keep your job while avoiding becoming a cum hungry whore. If you choose to allow your Girlfriend to stay the girls will attempt to seduce her.
(Almost Everything is Optional)

​Developer Notes:

Hello everyone and welcome.
This is a semi-demo/alpha. There is a lot more content than a normal demo or 0.1 and I have been working on it for about 4-5 months, I have included a cheat option in the Player room, using this will mean getting to some of the scenes faster if you choose to allow your girlfriend to stay. (Not recommended unless you just want to see scenes faster). I have playtested quite a lot and hoping that there shouldn’t be too many bugs left, but there is about 13k lines of code in total…so might have missed some.

Gameplay:
It is an unconventional VN. It is non-linear and has a gameplay loop. You must do tasks for the girls, as their lust increases they may ask for sexual favours. You must keep the majority of the girls happy as once per week they will decide if they want you to stay.

If you choose to allow your girlfriend to stay she will also be working and will grow closer with the girls. It is not instant and will take time as they slowly try to convince her. You will have the option to allow the girls to sleep with her, which will increase the chances of sexual encounters.

Content:
The game contains a number of still scenes and semi-animated scenes. Around 50-60 scenes in total.
Just under 30k words (29,978)
Futa on Female
Futa on Male (Optional)
NTR (Optional)
NTS (Optional)

Screenshots

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Changelog

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Act 3 – v0.97

A Completely New UI
The interface has been rebuilt across almost the entire game to make everything cleaner, more consistent and easier to navigate.
The overhaul includes:

• A completely redesigned main menu
• New player character-creation screens
• A new in-game pause menu
• Rebuilt settings, achievements and help screens
• A dedicated Journal dashboard in the apartment
• A redesigned Scene Archive with character hubs and location browsing
• A new visual shop with categories, requirements and purchase confirmation
• A new Status Dashboard for relationships, lust, addiction and Rebecca’s progression
• An expanded Facility Link containing assignments, messages, contacts, personnel files, Vitals, the Heart Monitor, Player Status and Gallery access
• Redesigned Hallway, apartment and Underground Facility navigation
• New notification markers, locked-content explanations and clearer progression information

This is much more than a visual reskin. The Journal, Gallery, shop, phone and navigation systems have been reorganised around the new interface so objectives, character progress and available content are easier to understand.

Act 3 Begins: Anita’s Exposure Test
The final Act 2 stinger now leads directly into the opening storyline of Act 3.
Anita calls the player in for a new exposure experiment featuring:
The route changes according to how the player approaches the experiment and establishes the next stage of Anita’s story.

Rebecca and the Lower Cells
Rebecca’s brief appearance in 0.95a now develops into her first complete storyline.
The new route includes:

• A new assignment from Montanna
• Cass escorting the player into the restricted Lower Cells
• Rebecca’s first supervised meeting
• Later private visits and daily check-ins
• Rebecca gradually receiving greater freedom and room access
• Choices affecting her Trust, Stability and Attachment
• New encounters involving Tatiana, the Helper and Eliza
• Ambient Lower Cells events and additional facility lore
• A full intimacy progression with first-time, refusal and repeat variations

Rebecca also has her own Journal progression, Status Dashboard information, personnel record and Scene Archive sections.

Major Café Expansion
The Café has received a large collection of new events connected to Cass’s Aggression progression and Anita’s pheromone storyline.
This includes:

• 25 new conversations
• Casual, pheromone, aggression and combined variations
• Different events depending on whether Girlfriend is present
• Three variations of a shared Cass, Anita and Girlfriend scene
• A separate Anita and Girlfriend couch scene

New Intimate Content
Additional confirmed scenes include:

• New Anita bedroom routes for both male and female players
• A new Montanna bedroom scene for the female-player route
• A Montanna and Girlfriend bathroom encounter
• A three-person conclusion to Tina’s Goth Chick outfit route
• A direct Girlfriend and male-player apartment scene

Nearly 700 image files have been added since 0.95a

Girlfriend Relationship Expansion
Your girlfriend now has more than 30 new conversations and reactions covering:

• Daily life inside the facility
• Recent story events
• Attraction and intimacy
• Boundaries and jealousy
• Previous encounters
• Her changing opinions of the facility’s residents

You can also wait for your girlfriend to return from her current activity and react to where she has been.

A new relationship-pressure system tracks secrets, jealousy and witnessed encounters involving both the player and Girlfriend. This can lead to confrontations, reconciliation, arguments, discussions about opening the relationship, nights spent apart and consequences the following morning. (Will be built upon in future updates).

Journal, Facility Link and Scene Archive
The Journal and phone systems introduced in 0.95a have been substantially expanded.

• The Journal now has a dedicated dashboard
• Story, Girlfriend, the six main residents and Rebecca have separate sections
• Updated sections display notification markers
• New objectives cover Act 3, Rebecca, the Lower Cells and recovered tapes
• Facility Link now combines assignments, alerts, messages, contacts, personnel records, Vitals, the Heart Monitor, Player Status and Gallery access
• Personnel information and live biometrics can be unlocked as relationships develop

The Gallery has become a much larger Scene Archive, featuring:

• Character hubs and location browsing
• Separate player and Girlfriend viewpoint categories
• Dedicated Rebecca and Lower Cells sections
• Clearer locked-scene information
• Recovered Tapes and Dream archives
• Dozens of new or newly indexed replay entries
• Stronger replay protection so scenes cannot permanently alter the active save

Tapes 6, 10, 11 and 12 can now be discovered during normal play. Together with Tapes 2 and 16, all six supported recordings can be tracked in the Journal, watched using the apartment VHS player and replayed from the archive.

Fixes and Compatibility
This release also contains a major compatibility and stability pass:

• Fixed older saves restoring the wrong rooms or character locations
• Fixed saves resetting to the historical Cass/infirmary state
• Fixed older saves crashing when loaded directly into the apartment menu
• Added recovery for very old saves returning to script sections that have moved
• Fixed the historical Cass examination-room crash
• Repaired Samantha’s player and Girlfriend control progression, including affected older saves
• Fixed the empty Watch Tapes menu error
• Fixed Girlfriend refusing the strap-on request at exactly 80 relationship
• Repaired and revalidated Tina and Girlfriend’s Goth Chick routes
• Fixed incorrect, missing and unreachable Gallery or camera unlocks
• Fixed Gallery entries opening the wrong replay
• Corrected phone, tracker and scheduled-event room checks
• Improved rollback safety in phone conversations and Samantha’s hypnosis minigame
• Corrected mismatched image, audio and media files
• Removed obsolete interface calls and development material from the release

Compatibility was tested using real saves from 0.92a, 0.95a and 0.96. The tested saves retained their correct week, day, time and location rather than resetting to the old Cass/infirmary scene.

Save Recommendation
Older saves are supported, but a new playthrough is strongly recommended for 0.97.
This release introduces many new story flags, relationship checks, Journal states and Act 3 progression variables. Older or heavily modified saves may therefore miss scenes or enter new storylines at an unexpected stage.

Act 2 Part 2 – v0.95a

Cass’s Story Begins to Change

• Cass now has her own Aggression progression system.
• As time passes, her personality can slowly change, affecting conversations, random encounters, and intimate scenes throughout the game. This is the first stage of her larger character arc and will continue to expand in future updates.

Anita’s Pheromone Story Reaches Its First Conclusion

• The pheromone experiment finally comes to a head.
• Your choices now influence how the storyline ends, with new scenes across the Gym, Bathroom, Café and Player Room leading to multiple outcomes and setting up future events.

A Brand New Phone System

• The phone is finally functional.
• You can now call every major character, with conversations changing depending on your relationship, where they are, who they’re with, and what point you’ve reached in their story.

New Character Journal

• The old placeholder gallery app has been replaced with a proper Journal.
• It tracks:
• Character progress
• Relationship status
• Story progression
• Quest updates

Hopefully making it much easier to keep track of everything as the game grows.

Gallery Improvements

• Lots of older scenes can now be unlocked permanently through gameplay, with animated thumbnails and numerous replay fixes.

Also Included

• Alongside the major additions, this update includes:
• Numerous new scenes across multiple locations
• Expanded gallery unlocks
• Hundreds of new images and animations
• Major phone dialogue for every main character
• Lots of progression and relationship fixes
• Gallery replay no longer changes your save-game stats
• Dozens of smaller bug fixes and quality-of-life improvements
• As always, thank you all for continuing to support The Futa Experiment.
• The systems added in this update are laying the groundwork for the rest of Act 2 and beyond, and I’m excited to finally start building on them instead of constantly rebuilding the foundations.

Act 2 Part 1 – v0.92a

Story / events

• Tina solo masturbate in her room (first day)
• First day orientation when working in the doctor’s office
• Find a small recording of Montanna discussing new arrivals
• Overhear Montanna talking to someone in her office
• The check-up (Week 5)

Anita Story

• Phase one of the pheromone injection starts after Week 3
• After each week, she increases the injections (this is integrated. But Part 2 will fully incorporate this new mechanic.

Cass / Rebecca (Hallway + Gym + Cass Room)

• Hallway: Rebecca introduction + beginning of Cass story
• Can discuss Rebecca with Montanna
• Gym: Montanna discusses the incident with Cass
• Cass Room extras (chance-based):
  • Cass may hug you when you leave
  • Cass may ask to make out on the bed
  • Cass may ask to kiss you
  • Cass may ask to pleasure you with her tongue
  • Cass may ask for missionary sex

Anita x GF (Cafe)

• Anita going down on GF
• Anita kissing GF
• Anita x GF riding

Player Room

• Strap-on with GF (missionary)
• Strap-on with GF (riding)

Bug Fix

• Fixed a bug where 4 small Anita + GF scenes weren’t triggering.

Act 1 v0.92

Bug fixes:

• Meanwhile events will no longer trigger if you do not have a camera installed, stats will still change, so the event occurs off screen
• Fixed crash Anita_Sex_OH_stats causing error
• Fixed crash Tina_cafe_alone not found
• Fixed missing image of lifttinaohsex66
• Fixed crash when calling addiction events when sleeping
• Fixed Anita_RM_OH_Kiss_listen calling kissing stats twice
• Fixed, possible error when kissing Anita in her room
• Fixed potential issue with GF waiting in Anitas room
• Fixed Anita room being clean if GF just standing around
• Fixed if giving Anita a BJ, it can send you back to the same menu again
• Fixed potential bug when GF first tries on Goth outfit
• Fixed bug in gallery not calling Cafe_Anita_OH_Sex_Riding_scene
• Fixed bug in gallery not calling Cafe_Anita_OH_Kiss_scene
• Fixed bug in gallery not calling Player_Room_PL_Riding_OH_scene
• Fixed bug in gallery not calling CassRM_Slow_Missionary
• Fixed 5 bugs in gallery of label not existing for a locked scenes
• Player room, increased chances of a number of events firing, they were set to very low
• Tweaked some of the weighted chances of seeing scenes
• Fixed bug of missing label when playing truth or dare
• Fixed crash if meanwhile trying to call Montanna HJ scene
• Fixed gallery bug of not calling corrupt Anita grope scene
• Replaced Darcy image so no white background

Act 1 v0.91

Bug fixes / system fixes

• Saving should now work properly
• Anita Truth or Dare event fixed
• Can’t purchase the Hallway camera until BDSM training has started
• Several other fixes (general weirdness, triggers, little breaks)

Act 1 story groundwork / new content

• New scene: finding a security door
• New scenes: GF talking about security
• New scenes: being threatened by security
• Tape system begins
  • First tape discovered while working in Cafe → can then buy VHS player
  • Second tape discovered while working in Nurse office
  • Third tape discovered in Darcy’s office
• New delivery scene to the basement: see the pens
• Anita mentions the pheromone experiment
• Updated the speakers to nicer images
• Cass mentions aggression re-education
• Tina mentions she’s scared of parts of the facility
• 24 new dreams added
• New scene: first examination
• You can now only track cum addiction after your first medical check-up with Anita

v0.90 Alpha

N/A

v0.85 Alpha

Darcy Content Expansion
Darcy finally gets the attention she deserves:

• Café scenes rewritten for better pacing and flow
• Office scenes fully reworked, with a few new additions
• Bedroom interactions updated with new mini-scenes and dialogue

New Intimate Scenes (Office-based):

• Player x Darcy Kissing
• Player x Darcy Groping
• Player x Darcy Handjob
• Darcy Solo Handjob
• Girlfriend x Darcy Fondling
• Girlfriend x Darcy Blowjob

️ New CGs + Animations (Bedroom):
Fresh visuals and rewritten text for:

• Darcy x Girlfriend Riding
• Darcy x Girlfriend Dancing
• Darcy x Player Blowjob
• Darcy x Player Riding
• Darcy x Girlfriend VR Blowjob

Transformation Twist

• Your girlfriend grows a cock
  • Requires high addiction to trigger during the night
• Tina borrows your girlfriend
  • Rough, dominant fun from Tina (as you’d expect)
• Small Samantha hypnosis scenein the café
  • Just a teaser… for now

v0.83 Alpha

✅ Every Cass scene has been reworked

• Better pacing, natural dialogue, and expanded choices
• Her shy, gentle, yet powerful personality shines throughout

✅ Rewritten Animations

• Every Cass animation has been reviewed and updated
• Includes BJ scenes, dinner scenes, gym interactions, and more
• Dialogue now reacts more dynamically based on relationships

✅ Dialogue Overhauls

• Expanded lines in scenes, including optional internal thoughts and lust-driven actions
• More choices, clearer consequences, and better buildup

Android Release (Beta)

You asked—we listened. The game is now available on Android!
✅ Basic functionality tested
✅ Should support all standard Android devices
✅ Let us know how it runs so we can improve it further in future builds

v0.82
Anita’s Complete Overhaul
Almost every Anita scene has been reworked with updated writing and new animations.
New Animation – Anita Showering
New Animation – Anita x GF Hallway Cunnilingus Scene
New Animation – Anita x GF Hallway Handjob Scene
2 Additional Scenes with Anita & GF in the Hallway

New & Improved Animations!
Tina x GF – BJ & Standing Sex (Bath)
Darcy x GF– Bath Titjob Scene
PL x Darcy – Bath Darcy Riding Scene (Reworked)
Montanna x GF – Café BJ Scene
Tina x GF – Café Grinding Scene
Tina x GF – Café Sex Scene

Writing & Scene Improvements
️ Major rewrites & refinements to Anita’s dialogue and interactions
Character personality updates – Anita’s flirtiness and confidence shine through even more!

v0.81
New Features:

Trackers are now available for purchase in the shop.
Updated in-game guide with new info.

New Scenes:

Gym: Girlfriend x Montanna Yoga, Naked Yoga, and Yoga Sex.
Doctor’s Office: Girlfriend x Anita Desk Sex and Desk Peek.
Hallway: Girlfriend x Tina Lift Sex.
Bathroom: Tina x Player Shower Encounter.
Player Bedroom: Girlfriend x Player Strapon.
Tina’s Room: Girlfriend sneaks out for BJ and sex with Tina, leading to a possible Girlfriend x Tina x Player scene.
Girlfriend Singing in the Shower: Different songs based on her state.
Girlfriend x Male character: Handjob, BJ, and Sex, with a follow-up stroking sequence if lust remains high.
Bathroom: Evil Darcy x Girlfriend.
Player Room: Girlfriend x Samantha, with a chance for repeat interactions.
Samantha Dinner Event: New dinner scene with Samantha and Girlfriend.

Improvements:

New images for Girlfriend in the player’s room.
Small Updates:
Reworked animations for Girlfriend x Tina riding scene in Tina’s chair.
Evil Darcy now has a unique portrait.
Starting points increased to 10.

Fixes:

Fixed crash in Tina’s room.

0.75
N/A

0.70

New BDSM Training System
-Once you’ve been in the facility for 5 weeks, you’ll unlock the option to work a shift in Darcy’s Office. While there, you’ll discover a recording, which leads to a conversation with Montanna. If you agree to train as her sub, you’ll receive periodic messages from Montanna to report for BDSM training sessions.

New BDSM Scenes
-This release includes a series of intense, one-off starter scenes to kick off Montanna’s BDSM traini

How To Install The Futa Experiment

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1. Extract
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The Futa Experiment Free Download

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