Unreal Engine Ultimate Sissy Simulator

Ultimate Sissy Simulator
Version: v1.5.2-alpha3 Developer: ussdev · Patreon · Itch.io Updated: 2026-01-12
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About this game

Ultimate Sissy Simulator drops you in as a male character building a contact list, with one goal: turn each new connection into a sissy by getting them to agree to small things first, then bigger things, then brainwashing them into accepting the ideas you've planted along the way. The game is built around the slow corruption of every relationship you start.

Built as a 3D management sim with character creation, point & click, and trainer mechanics, the game leans hard into sissification, transformation, and mind control as the core loop. Drugs, prostitution, BDSM, and slave routes layer on as your roster of sissies grows. Fully gay male and futa/trans content runs alongside the central feminization arc.

Changelog

v1.5.2-a3
Hello, everybody! This is a small patch, mainly for bug fixes and a few tweaks. Bugs: KinkApp and LustLink accounts delete themselves after simulating a few days. [FIXED] The captivity menu doesn't close when accepting or declining a deal, causing UI problems, especially in masturbation and sex modes. [FIXED] After being released from captivity, the camera gets locked to a certain axis in masturbation, sex, and room customization modes. [FIXED] Breast development isn't working properly, causing weird clothing clipping. [FIXED] Sex toys don't get added as 'owned' in captivity, making it impossible to purchase them after being released by the kidnapper. [FIXED] Punishments for getting caught during an escape attempt don't apply, causing the player to become stuck. [FIXED] Contacts-related UI alerts (yellow exclamation marks) don't update properly. [FIXED] The dropdown menu (bedding style) closes immediately. [FIXED] Toys in use (equipped dildo/vibrator, inserted buttplug) don't open when entering the Toys tab during masturbation or sex. [FIXED] It's impossible to receive deals after punishments (caught escape attempt);,the player gets stuck even if the punishment ends on its own (which happens occasionally). [FIXED] The KinkUp app adds a bunch of empty requests when creating a new account. [FIXED] Compromising footage isn't created when the appearance (outfit, makeup, nails, etc.) is changed. [FIXED] Deep-Throating Endurance doesn't recover. [FIXED] The character's age doesn't get updated. [FIXED] Physique in Personal Info always says 'Masculine'. [FIXED] Penis clips through chastity after changing outfits (top and legs). [FIXED] The sex machine doesn't increase/decrease the main stats (climax, arousal, pleasure, pain). [FIXED] The KinkUp search (main interest) either doesn't work or is locked to your 'Main interest' set in the account settings. [FIXED] It's possible to unlock a chastity cage in captivity, even if your don't have the key. [FIXED] It's not possible to change your breast size in Body Modification. [FIXED] In the main menu, 'back' button doesn't do anything, and it doesn't disappear when changing tabs (e.g., from Appearance → Hair/Nails/Makeup to Character tab). [FIXED] 'I should be permanently locked in chastity' idea replants itself after acceptance; [FIXED] After changing the sex position, the characters would "descend". [FIXED] Additional The 'Breast Implants' option has been added to Body Modification (Body Modification → Extra → Breast Implants). Color presets have been added to the Color Picker widget (makeup, nails, hair, eyes, room lighting). This will be expanded to include actual color presets for clothing using the existing patterns. You can now open the masturbation/sex menu with RMB (thanks for the request btw), and MMB now opens the sex/masturbation actions. I'll be adding a key mapping feature in the future, you'll be able to customize it however you like. A buttplug can now be inserted during sex. Note that anal options are not available when a buttplug is inserted. Unfortunately, not all bugs have been fixed. There are a lot of additional small changes, but they aren't that relevant for this version, so I'm not including them in the notes. I'll add everything in the v1.6.0-a3 release notes. As I often do, I probably forgot to mention some important changes, I'll add them later if that's the case.
v1.5.1-a3
Bug Fixes: Your rented/purchased rooms are disappearing after you exit a sex scene (at the motel); [FIXED] Contact requests sometimes disappear; [FIXED] Contacts aren't being saved if you click on another contact while one is open; [FIXED] Button alerts (yellow exclamation marks) do not disappear. Wasn't fixed, just disabled, it requires a little more work; To get promoted to barista, you previously needed 50% reputation. I've decreased the threshold to make it easier to get promoted and progress; Room IDs weren't being passed correctly to the Sex Manager. If you had two rooms and tried to have sex in one of them, the level wouldn't load properly; [FIXED] After ejaculation (during sex), the top's Climax meter didn't reset to 0; [FIXED] Masturbation Programs tracking was bugged, tasks would disappear, etc.; [FIXED] Exiting Masturbation mode while a program is active and then reactivating it would load an empty objective; [FIXED] Infinite sissygasm while in cowgirl position; [FIXED] Micro penis stroking was causing some issues; [FIXED] Sissygasm wasn't being counted when a masturbation program was active; [FIXED]
v1.5.0
A lot of minor bugs have also been addressed. Important Note: You can get kidnapped by those whose interests say "will be a master". Go ahead and test it out, and let me know if you find any game-breaking bugs. I'm gonna quickly go over what's new in v1.5.0-alpha3: Game Selection Screen: You can now create up to 20 games and even pin two games at the top. Real Estate & Bills: The real estate menu has been updated with some UI changes, mostly for bug fixes. Plus, the bills you receive are now multiplied by 5-10% daily. New Full-time Job: A coffee shop job has been added for you to earn some stable income. It's pretty straightforward: earn XP, don't miss work days, get promoted, and make more money. It's not fully finished yet, 'Staff Management' and 'Random Events' will be added in future updates. New In-Game Game: You can now play a game with your contacts. Right now, you can only bet money, but more options will be added soon. You can also customize how you want to play, making it as simple as just rolling one die, for example. KinkUp: It's not really a dating app, but you can find people and add them to your contacts through it. It’s an anonymous app, so you never really know who you're meeting. Its functionality is a little limited right now because it doesn't make much use of 'main interests', but it's great for hookups. New Male Character: For now, just ignore its weird looks, textures are off, and the morphs are meh. He doesn't even blink, just stares. It lacks properly set up presets to create more proportionally accurate guys (I can't really describe it..). But it does its job, it can have sex and stand in the main menu acting like it's asserting dominance. I'll be adding skin variations, hairstyles, facial hair, and more in the next update, so it'll look much better. And there will be more races available, too. New Progression system: The only available goal (Self Sissification) isn't fully functional yet because some objectives in Stage 3 and beyond aren't being tracked properly. But don't worry, it doesn't really break anything, Self Sissification serves mainly as a guide. It's not super challenging, just a way to give players some direction on how to increase certain stats, find people, etc. It'll be completed in v1.6.0-a3. Even though most of the tools to sissify your character are available in the game, players still need some kind of guide like this. Sorry it's not fully functional yet, I'm working on it.
v1.4.1-alpha3
New Content: Tank top Sports bra Leggings Sneakers Over the knee socks Knee high socks 2 Hairstyles Leather Collar Fixes and Improvements: Clothing overlaps have been fixed, tops and bottoms will no longer clip through each other in a weird way and will automatically adjust if needed. Color customization has been added for most clothing options. This system has been reworked, I've put most of the time to make it work properly. The next patch will add color customization options for all items, including accessories. Hair preview images have been added. I've fixed some bugs here and there, but there are still a lot of them.
v1.4.0
Room Customization: Baseboards and crown molding can now be customized. You can change the model and apply whatever color you want. Object placement: Free rotation has been added for placeables. Scaling currently works for wall-mounted objects only. Live streaming: Simple notifications have been added to make the pop-ups less annoying. I worked on optimization a bit, just cleaning things up. However, major optimization for live streaming is coming in v1.5.0-alpha3. Oral-related tasks are also on the way, along with the ability to stop the sex machine and change positions. Eyes customization: You can now change the eye color or choose contact lenses (there are two options, mostly for testing). Characters have their natural eye color, so it will always switch back to it if you don’t use any customization options. Nails: Fingernails now have the option to choose the length: short, medium, or long. This makes it much cleaner instead of having a ton of options for the same style of nails. Advanced color customization for nails, including gradients and patterns, will be available soon. Eye makeup: It's now possible to apply eyeliner, eyeshadow, and highlight separately. Instead of choosing from existing options, I thought it would be much better for players to mix and match, as not all makeup options worked for different eye shapes. Clothes color customization: Patterns for clothes have been added. You can choose a pattern, apply any color you want, or use existing styles. This option doesn’t work for every appearance item yet, just for socks. It requires a little more time to properly implement it. Color Selection Widget: You can now save colors and use them whenever you want. Placeables customization: There are wall art items with lights, and it's possible to change the colors. Overall decor optimization has been improved. Additional: Lighting and reflections have been improved a bit. Even though these are not the final adjustments. Two positions for the sex machine have been added: one for anal, and one for oral. Stockings have been added, and I'm currently working on customization options. There will be patterns and garter belts. A couple of placeables have been added (a creepy teddy bear and a weird shark), mostly to get the object placement working. There's a lot more coming. A few wall art items have also been added. Pretty much every item now has a preview image (hairstyles and head accessories don't) A medium-sized room has been added. There are some bugs when switching primary studios, if you encounter this, close the Real Estate menu and enter again. Instead of adding descriptions of the stats in the Help tab, I added an 'info' icon to the stat box that can be hovered over. Most of the important stats have descriptions now. I did a lot of cleanup, the project is still a mess from a ton of quick prototyping, but it's much better now.
v1.2.1
What's new: Outfit: Bottom: 2 new item Hands: 1 new item Panties: 2 new items Footwear: 1 new item Accessories: Neck: 3 items from Master mode Makeup: Eye Makeup: 4 options Hair: Scalp hair: 1 new option Hands, panties, and neck accessories are now available and work properly, more or less. There might be some bugs where an item is available to equip even though it's not compatible with other outfit items. This will all be fixed in upcoming updates. Bug fixes: The bug that was causing tasks not to complete when starting the stream with an active masturbation action has been fixed. When changing a hairstyle, the color wasn't applying. Fixed. Automatic character rotation when entering/reentering the Appearance tab has been fixed. Total earned tokens have been fixed. It was displaying huge numbers due to wrong calculations. A lot of minor bugs have been fixed, and some optimizations have been made. Additional: These are things I wanted to add to the previous update (v1.2.0-alpha3) but wasn't able to due to time constraints. That's why this patch is pretty small, but it's not insignificant. Starting from v1.4.0-alpha3, I'll be adding new content, mostly outfits and accessories, weekly. Right now, my goal is to release v1.3.0-alpha3 on time. It's an important update. I'll drop it either Friday (May 23) or Sunday (May 25), depending on how time-consuming the iteration is. As always, if you find any bugs, have suggestions, or just want to critique the game, leave a comment or hit me up on X. I'll get back to you as soon as I can! Thank you so much for your support and patience, and have a good night/day!
Installation
1. Extract and run.

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