Sex Formula v2.0.0
Tags
Sex Formula is a adult simulator game developed by MIGI STUDIO, built with the Unity engine. It was first released in September 2024 and last updated in June 2026. The game runs on Windows and is available in English, Japanese, Chinese.
Overview
Features
Sex Formula features themes and elements such as sex toys, simulator, titfuck, vaginal sex, virtual reality, voiced, 3d game and anal sex.
Frequently Asked Questions
Is Sex Formula free to download?
Yes. Sex Formula is free to download, with links to the available builds listed on this page.
What engine is Sex Formula built on?
Sex Formula is built with the Unity engine.
What platforms does Sex Formula support?
Sex Formula is available for Windows.
What language is Sex Formula in?
Sex Formula is available in English, Japanese, Chinese.
Screenshots
Download Links
These links lead to external hosting providers. Use at your own risk.
Developer Notes
This game has two versions: Desktop and VR. You can play it on Desktop even without a VR headset
This game narrates how the player meets Reika and begins a life together. Before satisfying Reika sexually, she will not agree to date you, even if you already have a physical relationship.
Reika has menstrual cycles, fertile periods, and varying levels of sexual desire. If you do not take proper safety measures during her fertile period, Reika can get pregnant.
During cohabitation, the player can engage in sexual activities with Reika at three different locations, each featuring:
Foreplay: 21 positions (63 in total)
Sex: 18 positions (54 in total) including oral sex , handjob, titjob, intercourse, anal sex, and footjob
Cumming Animations: 18 positions (54 in total) including oral sex, handjob, titjob, intercourse, anal sex, and footjob
Reika’s Orgasm Animations: 4 positions (12 in total)
Reika’s Special Services: 2 positions (6 in total)
Storyline:
The storyline consists of 8 chapters, each approximately 10 minutes long. It describes how the player meets Reika and how satisfying her triggers more advanced carnal pleasures.
Dirty Talk System:
The dirty talk system in this game includes animations. There are 234 sets of dirty talk dialogues per language, varying based on the type and level of arousal.
Cross-Section View System:
The system offers two ways of presentation: the same windowed display as the previous game, or directly displayed on the character’s body
Controls:
System Requirements:
MINIMUM:
Requires a 64-bit processor and operating system
OS: window7,window10
Memory: 12 GB RAM
Graphics: GTX 1050
DirectX: Version 11
Storage: 30 GB 20 GB available space
VR Support: Oculus Quest 3,Vive Cosmos
RECOMMENDED:
Requires a 64-bit processor and operating system
OS: window7,window10
Memory: 12 GB RAM
Graphics: RTX 2060 SUPER
DirectX: Version 11
Storage: 30 GB 20 GB available space
VR Support: Oculus Quest 3,Vive Cosmos
Changelog
v2.0.0
[Features]
● Added - Repeat Dance Button
● Added - Automatic Hicky Display
● Added - Automatic Semen Effect Display
● Added - Automatic Cleanup After Oral Sex Settings
1. Always
2. Random
3. Never
● Added - Separate Semen Effects for Face and Mouth
(For example, semen can be inside the mouth while also visible on the face.)
● Fixed - Floating fluid appearing in front of the male protagonist's penis during story scenes
[Outfits]
● Added groin-pulled-aside variants for certain outfits
● Fixed - Glasses were not saved correctly when saving outfit presets
[VR Features]
● Fixed - Floor movement destination indicator display
[Animations]
● Added - 8 New Animations (Kitchen Standing Position)
v1.9.0
● Fixed an issue where the achievement for the memory (recollection) feature could not be unlocked.
●New animation x 10 (Kitchen DoggyStyle)
v1.8.0
[Animation]
●New animation x 6 (Kitchen OnTop)
●New main screen animation x 1
[Function]
●New facial appearances x 2
v1.7.0
●New animation x 12 (Kitchen Missionary)
●New clothing x 1
v1.6.0
●Added liquid effect display switch
●New animation x 8 (Bedroom Standing Position)
v1.5.0
●New animation x 10 (Bedroom DoggyStyle Position)
●New opening animation x 1
●New Hairstyle x 1
v1.4
Hello everyone, Sex Formula v1.4.0 has been updated
The revised contents are as follows
[interface]
●Tab Key will no longer hide subtitles
[Animation]
●New animation x 6 (Bedroom Ontop Position)
[clothing]
●New clothing x 1
[Function]
●New Hair Material (B)
●Added color settings for hair material (B)
●When you leave the game, the current clothing settings will be recorded
v1.3
[interface]
●Remove [Auto Position] function
●Add [Frame Rate] settings function
[animation]
●New animation x 12 (Missionary in Bedroom)
[clothing]
●New clothing x 1
[Function]
●Repair clothing judgment
●Fixed the DirtyTalk voice volume function
●Fix the voice volume function
●Fixed the problem of being unable to talk after pregnancy
●Fixed the problem that the recall function cannot trigger achievements
v1.2
[interface]
●Newly added foreplay and sex button number markers
●Display correction in some languages
[animation]
●New start screen x 2
●Some animation corrections
[clothing]
●Newly added high heels x 1
●New clothing x 1
[Function]
●Newly added camera close to Reika’s lips for kissing
●Newly added camera is close to Reika’s breasts and can be sucked and touched
Note 1: Reika must show her breasts
Note 2: [If the left and right breasts are touched at the same time, the first touch is: sucking, the last touch is: touching]
●Newly added mobile camera can be changed to right click
●Added hotkey [F] to switch cameras
●Newly added hotkeys [1,2,3,4] to switch camera focus
[VR function]
●VR has added the ability to kiss Reika by putting the helmet close to her lips
●VR newly added: Put the helmet close to Reika’s chest and you can suck and caress it
Note 1: Reika must show her breasts
Note 2: [If the left and right breasts are touched at the same time, the first touch is: sucking, the last touch is: touching]
v1.1.2
[BUG]
●Mouse sensitivity default correction
●After the settlement animation, you cannot have sex normally.
v1.1.1
[interface]
●Added game settings [Screen][Control] tab.
●Added mouse sensitivity setting.
●Resolution-related changes to the drop-down menu.
[Function]
●Added [Next Week] button.
[BUG]
●Some animation and lighting corrections.
●Corrected the transparency judgment of stockings.
●Correction of dialogue window judgment has been corrected.
●Correction of achievement triggering function.
●Correct the initial position of each room.
●Delete the black cutscene before the scoring animation.
[VR BUG]
●VR Corrected the [Dirty talk] playback frequency function of the game settings.
●VR If sex ends with sexual intercourse, switching POV will cause the Xray window to go out
●After two consecutive sex sessions in VR, the cutscene effect did not appear.
v1.1.0
[interface]
●Some translation corrections
●Condom button switch identification
[Function]
●Added automatic cleaning settings
●4K resolution is changed to Ultra, and to 2K (2560x1440), 4K (3840x2160), 8K (7680x4320) resolution
[BUG]
●Stockings will disappear under water
●After triggering the promotion relationship, the window perspective function becomes invalid.
●Automatically put on condoms without closing the see-through window
●Correction of some FPS lens angles
[VR-interface]
●VR-Game settings add POV camera effect switch (replaces the original correction lens function)
[VR-Function]
●VR-A and X keys are grab buttons
●VR-Y key can call game settings
●VR-B key can quickly switch [first person] [default]
●VR-During sex, press the left selection button to drag the lens
[VR-BUG]
●VR-A perspective window will appear during settlement
v1.0.1
[clothing]
●The upper body of the policewoman costume will disappear when settling the account
[interface]
●Some text translation issues
●New [System] page for game settings
●[Game Settings] - [System] Added [Return to Home Page], [Exit Game]
[Function]
●Change the time spent to spend the day
●Added higher resolution 4K 3840 x 2160
●New automatic orgasm and ejaculation options in game settings
[BUG]
●After Reika gives birth, approaching Reika cannot trigger dialogue.
●Memories can also trigger achievements
●When clicking on ejaculation or orgasm in a non-penetration state, it does not detect whether the see-through window is open.
v1.0.0
Initial Release
More links may be in the source thread (registration required).
Source Thread