Ultimate Sissy Simulator
A downloadable game for Windows
Master Game Mode:
In this mode, you create a male character and start making connections. Your goal is to turn your contacts into sissies by getting them to agree to certain things. Once you’ve got your first sissy, you can start brainwashing them to accept the ideas you’ve planted inside their heads.
Mechanics and Features: (not the full list)
- Appearance customization
- Face and body modification
- MtF Transition
- Interactive sex
- Complete sissyfication process
- Dungeon
- Chastity cage
- Room customization
- Sex toys
The game is in Early Access, therefore, you may (and probably will) experience a variety of glitches, bugs, etc. Please help improve the experience by providing useful information about any bugs you find.
Follow the game's Patreon for free.
If you have any questions, please leave them in the comments! I’ll get back to you as soon as I can. Thank you for your patience!
Alpha 3 Release Date: April 28, 2025
Updated | 2 days ago |
Status | In development |
Platforms | Windows |
Rating | Rated 4.5 out of 5 stars (20 total ratings) |
Author | ussdev |
Genre | Simulation |
Tags | Adult, bdsm, crossdresser, femboy, LGBT, sissy, sissymaker, sissy-simulator, Transgender |
Average session | A few hours |
Languages | English |
Inputs | Keyboard, Mouse |
Links | Twitter/X |
Purchase
In order to download this game you must purchase it at or above the minimum price of $6.95 USD. You will get access to the following files:
Download demo
Development log
- Update on Alpha320 days ago
- Ultimate Sissy Simulator v1.2.0-alpha2 + Release Date for Alpha347 days ago
- Alpha 3 - Release Window63 days ago
- Ultimate Sissy Simulator v1.1.0-alpha2 + New Content99 days ago
- Ultimate Sissy Simulator v1.0.2-alpha2Dec 06, 2024
- Ultimate Sissy Simulator v1.0.1-alpha2Dec 03, 2024
- Ultimate Sissy Simulator v1.0.0-alpha2Dec 02, 2024
- Release date for the upcoming updateNov 20, 2024
Comments
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Is there a Discord or any specific place to mention bugs we've encountered?
I just came back to this game and finally paid for it, and I really love how much it's come along! The only issue I'm encountering so far is I haven't really been able to find any way to get the sissies to agree to have unprotected sex. Is this a bug or am I missing something right in my face? lol
Thanks for supporting the project!
Don't worry, it won't break anything, it just lowers your character's karma. That's no big deal, though, since in this build karma doesn't really matter. It's just an indicator of your character's actions. This and demands-related bugs are known and all of them have been fixed. Won't cause any trouble in the upcoming update. Sorry about that.
Also, you asked about Discord in your other comment, it's coming soon, hopefully this week!
Will buying this game now at the current price entitle the buyer to download access of the full release in the future as well? I have noticed some games on this platform require an additional purchase for the full release afterwards.
You only buy it once. All updates drop on itch.io, so as long as the platform sticks around, you'll get all of them without any extra purchase bullshit. Thanks!
Thanks for the quick reply and fair policy. I appreciate your work. I played an early demo and have been waiting for a few updates to see how you hone your craft. You have a gem on your hands with this creation, take all the time needed for updates.
Thank you so much for your support! Gonna be worth the wait!
update was promised in February 2025 and now it's April 2025, just saying
I am ready to wait quite a long time if the update is high-quality and large-scale. However, it is unclear why you should set deadlines for yourself and your fans.
Hey, we all make mistakes - I definitely messed up by setting a deadline last time. But I'm not gonna do that again. The update is coming when it's ready. It's almost there, and I just need to make sure it's just right so it won't waste anyone's time.
If you bought the game and want a refund, you're welcome to do so. I don't see your username in the buyer's list, though. But you can request it on your own if you got a copy. Thanks for checking in!
Just a heads-up: the game isn’t finished yet, it's in early access for those who want to support its development.
February was more of an aim than a firm deadline. I never promised a February release, and I think it's important to highlight that.
I totally get that everyone who backed the game is waiting for the update. Good things take time, and I'm only human - there's only so much I can do. I know it's frustrating.
The update is coming when it's ready.
I would refund you, but I couldn’t find your username on the buyer's list.
Thanks!
i had purchased with a different account, don't want a refund just a little disappointed and frustrated to not be able to play the new update, i have been very eager for the update since you mentioned the Feb 10 to Feb 20 date. Then you said you would give a confirm release date on Monday i.e. today and still no update. Never mind , I understand that you are trying your best
I totally get the frustration. My Monday just started a few hours ago, so I'm sorry about that - time zone shit, you know. Alpha 3 will be released on April 28th, 2025, exactly four weeks from now. Everything's mostly done. Right now, I'm just adding content. Again, I'm sorry about the delay - I'm doing my best. It won't be delayed any longer, that's a promise. I basically wrote the post I was about to write today about the release date. Thanks again!
omg are you alive?
awesome game, any plans to add femdom content?
There will be an option to choose a female character in master mode. Some femdom content will be added in future updates. Thank you!
Great game bro, keep up the good work and can't wait to see the progress.
Thank you!
hi, recently came back to this game and found it had been updated and found a bug that was around when i first played, my sissy's post castration are asking to be locked up in a chastity cage which isn't exactly possible without their balls...
Hi. It's a known bug. I touched on that in the comments of this post https://ussdev.itch.io/ultimate-sissy-simulator/devlog/886649/ultimate-sissy-sim... I'm working on an improved version of sissy's demands. This, along with all the other demands-related bugs, will be fixed in the upcoming update. Thanks for checking in!
You have the beautiful foundations of an excellent game on your hands. Just make sure you are not over working yourself mate, at the end of the day your health comes first. The people that love what you have so far are in no rush, so take your time focus on your health and have fun making your game. Also don't be afraid to ask for help whether regarding your heath or game development. Anyway that's just a thought you have a great day.
The game has good potential :)
I hope that the option for a female main character / femdom will be included in the game. With cuck/bull content if you like, so that it fits the sissy theme.
The training options should also be improved and expanded. At the moment it feels too much like grinding.
More BDSM content would also be desirable. There are already chastity belts, so other fields such as CBT, spanking, whipping, etc. would also be suitable.
Very promising game. Just a small thing that I'm not sure if it's a bug or a mechanic I'm not understanding - my orgasm meter is increasing incredibly slowly. I walked away for 20 minutes and it still wasn't full. EDIT: Never mind, I see below that it's the stamina management mode.
This is a very promising project!
I greatly appreciate the state it is now and can't wait to see it develop more. So much potential, I will wait patiently for full bloom :)
Cheers to the Dev!
Thanks so much for the kind words and your support!
I was wondering if there would be a game mode eventually added where you play as a sissy or at least have a sissy pov added to the explicate scenes.
Sissy mode will be out on March 17. Thanks!
any update?
btw the game has great potential keep doing
Couldn't finish the update in time, unfortunately. Wrote about it here https://ussdev.itch.io/ultimate-sissy-simulator/devlog/904605/update-on-alpha3 I need a little more time. Sorry about that. Thanks!
Hello I really liked the game! I can't wait for future updates! Also... How MtF works?
Im also having a problem with the MtF. The estrogen at a point just stops progressing and it seems to fluctuate in the high 90s, which makes it impossible to achieve the bonus.
Answered that in this post: https://itch.io/post/12134345 The fix will most likely be part of alpha 3, as that is my primary focus right now. Thanks.
Ah ok, Thanks!
Add estrogen to your sissy's consumables. If you don't see estrogen on the list, make your sissy accept 'You should start HRT' idea. Then, you need to lower your sissy's testosterone by either adding anti-androgen to the consumables or by castrating your sissy.
Lovely game! I'm a little confused about Sissymaker. It doesn't seem to give any points for sissygasms like Mindwrecker was supposed to. Is this on purpose? Also, I'm gonna list some bugs and suggestions here:
Suggestions:
Thanks for your time.
In this post https://ussdev.itch.io/ultimate-sissy-simulator/devlog/886649/ultimate-sissy-sim... , I mentioned that dungeon-related bugs will be fixed in Alpha 3. I also addressed why 'unprotected sex' is missing (in the bets list) in the comments of that post.
----------
Thank you for your suggestions.
I'm constantly making changes, so nothing you see in the game is finalized yet.
Thank you for your support!
do you ever plan to make a third game mode in the future? or a combination of the two?
There's a lot of experimental things i was working on before the alpha2 release. Will i ever make a full mode out of those? Probably not. I want to finish these two, polish them, fill them with a lot of content, and release v1.0 before the end of this year. We'll see how it goes, i guess.
well you can always make them as dlc's after launch
As a gamedev myself, I like it so far, keep up the good work. I believe it will be a huge success if you keep your progress steady. There is a gap for this type of game because I was sick of half-baked graphic-novel style gameplay, I'm a huge fan of idle games and simulators so this felt good. As it is still early in the development its bound to have bugs and lack of content but its still enjoyable, thanks!
Quick question, is there a reason why I can't rate this game? Did you disabled it?
I did disable it a few days after i released the first ever build, and completely forgot about it. I probably thought the game wasn't ready to be rated yet or some stupid shit like that. Thanks for bringing that up. Go ahead and rate it!
Thank you for your support!
Lol then im glad I asked
I love your game, I can't wait for the next update
Is there a way to play old versions ?
Thanks. Not that i know of, no.
Alright, thanks for the reply :)
if you download the itch desktop app you can download previous versions
i soft-locked 2 times now. both i wanted to fuck and got stuck in my empty room. cant change positions or smth else. masturbation and edit room works, but not scenes
That's an old build (v1.2.1-alpha1). The bug occurs if your character is wearing a chastity cage, removing it usually solves the issue.
Seems estrogen can't go to 100% to get the bonus. Is this intended? I also noticed a lot of tracking on things like facial hair for the progress is broken.
Progress is still in development (for both sissy and master). This is why the progress of some tasks may seem like it is not being tracked properly. For example, the facial hair task will be marked as completed if the sissy has not had any facial hair for at least one day, and it will remain marked as completed. All of this will be finalized by Alpha3.
Estrogen, however, is part of the health/diseases system that I am currently about to finish. Even though the progress system is in development, a sissy can still complete their transformation all the way to the MtF transition. Thanks!
Nahhh, imma drop it, forced being sissy ain't my thing, thanks for alpha 2, enjoyed it more than a new alpha 1.2.1
The latest version is 1.2.0-alpha2. Nothing substantial in terms of gameplay has changed. There's some improvements and bug fixes. I'm not sure what you are referring to by 'alpha2', because this is still alpha2. Thanks!
New progress system and little story-line with landlord, before that update we weren't forced into submission
The landlord thing is alpha1. That's old, it's not what what was released two days ago. 'Sissy' game mode is being redone and will be part of alpha 3, it's not out yet. Currently you can only play 'Master' mode.
Great game! Will this game be available on Steam and support Steam Workshop MODs?
Hopefully. The initial plan was to launch it on itch.io in early access and see how it goes. I didn't want to launch the game on Steam in early access. Also, it's not guaranteed that the game won't be rejected by Steam. Thanks!
Hi! Just wanted to say that your game is awesome. A bit buggy but the gameplay is very unique and the transformation of sissies is very well made. Cant wait for the new update.
Hi! It is buggy, sorry about that. This is an early access version for those who want to support the development. It will get better with new updates. Thank you for your support, it means a lot!
I love your game I just have like two questions
1. How do I increase the Estrogen level?
2. How can I increase the orgasm meter for my character? cause every time I have intercourse with my sissy it slowly increasing but not fast enough
1. Add estrogen to consumables.
2. Turn off Stamina management if you want your character to cum faster. It's 'on' by default. If that doesn't help, your sissy's anus became too lose from being pluged for too long. Anus recovery will be in the upcoming update for the master mode, should be released in a few days.
So one of my sissies is demanding to get fucked in the ass, I have done so in the dungeon, and freed, and its not going away, the next day it gives me -1 karma because its not fulfilled
Also I have noticed a few bugs as im sure many have and are already included in the next update, but I'll post here just incase. When entering the dungeon, at times the rooms that are occupied become vacant, and you can't click out, seems to bug out for some reason, maybe a memory leak? Not a programmer so just throwing it out there.
The items like collars and chastity devices are duplicating in sex scenes after being used by a previous scene and hover in the air during the current scene. If that makes sense at all. Graphic glitch of hovering items.
This is what I can think of at this moment, others I have noticed have been posted here already, next I play and notice more I'll share it here.
Love the game very well planned, can't wait for more updates. Would love to see things like going to dinner with your sissy while dressed up, or in general have a wardrobe section so you can dress up your sissy and even yourself so its not always a nude avatar. Also when you have toys in the dungeon rooms, when you enter the room you can see them using the toy in an animation when you walk in, and using the brainwash skills like "your ass is a pussy" so dildos get used in the ass, etc... and get to see them doing it. Would be really hot to see that. Lots on your plate Im sure, so glad you are working on it! much love!
Karma will only decrease if your sissy dies in your dungeon, or you hold a sissy (that didn't agree to stay long-term) in there more than 7 days. In that case, you'll lose 1 karma point a day.
I'll drop an update in a few days for the master mode. It will fix pretty much all the known bugs and add a few new features. I'm working on a big update right now, otherwise all these bugs would've been fixed by now. Sorry about that. And thanks for your suggestions!
Hi I love the direction the game is going but I wanted to share an idea I had to see if maybe you'd be interested in implementing it?
So at the moment I think the current method of acquiring sissies is a bit dull, that being the process of: Search for contact, play the dice game to get them to agree to sex, being your sissy, being locked in the dungeon, etc. and I think a way to get around this would be to give the option to abduct potential sissies. This could also factor into the karma system (abducting people obviously gives a lot of negative karma) but this also opens the door to actually making the dice game fair for the AI since it's very obviously weighted towards the player.
To summarize: Make the dice game fair for the AI (making it more difficult to get sissies that way)
Also make an abduction system so that the player can choose to use that method instead.
This should allow the player to decide if they wanna have a high karma experience or a low karma experience (this is under the assumption that karma will eventually begin to mean something) depending on what benefits/drawbacks the player wants.
Ofc this is just a random idea I had while playing but I thought I'd put it here just in case it might inspire the dev or something
Hi! There was a way to get a sissy into your dungeon (master room) and then convince them to stay there. Ultimately, I had to remove some features to make the game less 'controversial.' However, the new features I'm currently working on for the master mode will definitely add a lot of new possibilities. The game will only get better, hopefully. Right now, it's pretty straightforward.
Thank you for your suggestions, they mean a lot!
Booooo but controversial is fun! (I totally get it dw)
I do hope you gain the confidence to add them back again maybe once you get to working on the Beta.
I hope so! Maybe one day i'll be 100% free to create whatever the fuck i want. Unfortunately, that day is not today :)
So I've been playing the game for over a day and I am running into some issues 1St of all how do I raise the obedience and brain wash currently o have brain wash at 75% so how do I push it to 100 and how do I raise obedience
2nd my character can't cum it was normal when I started it but now my character isn't able to cum
( I really like the game and can't wait to see it get completed p.s love the developer for making this type of game
1. More ideas they accept, more brainwashed they become;
2. Because your sissy's anus is not tight enough. Your character's pleasure won't increase. It happens if you plug your sissy for too long. Check their anus tightness, it's prolly at 0%. There's a bug that won't let anus to recover over time, but i fixed it and it will work properly in the upcoming update;
Thanks! Support the game if you can, i'd greatly appreciate it.
Edit: forgot about obedience. There's too much factors that won't let it to increase. It's pretty easy to increase obedience if you put your sissy in a cage (not chastity cage).
Okay thanks but I have gotten all 14 of the ideas fully accepted by my sissies and they both have their brain wash at 75%
And how do I put my sissy into a cage I have bought and placed the cage but my sissy stays on top of the bed
To put sissies in a cage you have to go into the room and hover over the cage and select "Settings" to then assign the sissy to the cage
Thanks
hello! first of all, thank you very much for your work, I really haven't seen games like this before
Since one of the most exciting moments is the physical transformation, it is a little frustrating that the future sissies initially have the same body and face type. Is it possible to add more models for subsequent transformation (for example with more muscle body and manly face, as when choosing a player)?
Possibility of subsequent correction their appearance would greatly emphasize the changes in their appearance and loss of masculinity
Hello. There will be a multiple body and head types. That will make characters look more unique. Obviously there's limitations, cause it's a game after all.
Hi, I seem to have found a bug where if you don't remove a cage prior to castrating then the cage reappears and cannot be removed
Are there any known workarounds to get rid of the cage after this?
Other then that it looks great, look forward to when both modes are ready!
Hi! As of now, the only 'workaround' is to remove the cage before castration. Sorry about that. I already fixed that bug, it won't cause problems in the upcoming update. Thanks!
omg this is awesome! i was almost starting to study how to make game to satisfy my desires but now it will not be urgent, at least for a long time. i have a request, could you let player have option to cum INSIDE the throat? search throatpie videos, i think this makes a lot of sense with the game, can even add a brainwash idea that relates with making the sissy drink cum
The ability to cum inside the throat is there, but the animation is not. That's why i disabled that option for now. I'll add in future updates. Thanks!
WOWWWW THIS IS LOOKING SO MUCH BETTER THAN THE FIRST VERSIONS🥰
is there a discord server?
No, i'll launch a discord in 2 weeks hopefully. Very little free time to focus on anything other than work, unfortunately. Trying to get this update out. Thanks!
any news in the update
Almost ready. It's a big update, Sissy mode + new content for the Master mode. I'll share more details in a few days. Sorry for keeping y'all waiting this long, but I believe it will be worth it. Thanks!
omg sissy mode is coming back already!?!? awesome, thank you for your continued hard work on this game <3
Of course it's coming back, it's essential to the game. I've made a lot of progress, can't wait to release it. Thank you so much for your support!
i know, just surprised that you finished it so quickly, i think you originally said it would be back around mid february
Thanks! I'll post a devlog about the current state of development soon.
Hi, enjoying the game. Don't know if this is a question that has already been answered or not but how exactly are you supposed to go about increasing the relationship status?
Hello! The easiest way would be to win a dice game and then let them keep whatever they lost. It's also possible to increase it after sex, but it doesn't always work. It's a known bug, it's being fixed in the upcoming update. Thanks!
Is there and audio bug for the game? I can't hear anything other then the dice game
It's not a bug, I wrote about it in this devlog https://ussdev.itch.io/ultimate-sissy-simulator/devlog/843803/ultimate-sissy-sim...
Thanks for the quick response. I thought maybe it was something in my end. Can't wait for the future content and thanks for being awesome!
Thank you for your support!
Is there anywhere else to buy since my card is declaind here
Not at the moment. Sorry about that.
Hi,
Loving the game and all the updates. Quick question, how do you get a sissy to accept the you should wear chastity by themselves? Been trying everything.
Thanks
Hi! After they accept the 'You should be locked in chastity' idea, they won't ask to be unlocked. Did you try that? I just checked, it works. Give it a shot and let me know if it doesn't. Thanks!
Hello, I noticed a previous comment about the sissygasms not being counted properly. I just purchased the game and it still isn't working properly so I'm not making progress like I should. :(
Edit: Nvm, I saw the most recent update notes. My brain thought it was fixed but I can see it's still an issue.
Hello. Sissygasms work as they should, however, some things don't count if you've unlocked the Mind Wrecker skill. That's all. This shouldn't affect your progress. I wrote about it in the latest devlog. Where exactly are you not making progress? Maybe there are some other bugs.
After having sex and checking the progress of the sissygasms during, I've gotten up to 14 but when I quit and it loads the statistics afterwards it always says Sissygasm - 0. Even before unlocking the first level of Mind Wrecker it wasn't counting them. The only thing that has raised was the Anal Endurance. Should I delete and redownload maybe?
Edit: It's also entirely possible it's the app that has caused the issue. I'm gonna try re-downloading from the browser website. That has helped me in the past. Sorry to bug you.
No, ignore the Sex Results, they don't display everything that was counted during sex. It's a known issue, and I wrote about that as well. If you go to your sissy's stats->statistics, you'll see that sissygasms do count. Also, you can see that your sissy's Sissygasm stat is slowly increasing (stats -> sex stats).
Edit: You described the known bugs. I don't think re-downloading will fix them, but they're being fixed in the next update. I'm working on it right now. Don't be sorry, feel free to contact me if you have any questions.
I see now that they are being counted it's just that I'm not getting the Brainwash points from them is all. So I feel like it's slowing down what I could be doing if I had them to plant ideas and increase the levels of the ones I already have planted.
Hello! Just a quick question
What is the Master Room and how can i unlock it , or it’s not available in this update?
Hello!
Ignore it for now. It's basically a large customizable room. It will make more sense in future updates. Thank you.