Boob Simulator: Yes, It’s A Real Unreal Engine 4 Game
Posted on June 13, 2015, 4:11 pm By
Boob Simulator

Using Nvidia’s FleX and the power of Epic Games’ Unreal Engine 4, one creator is taking the next step in virtual reality, interactive entertainment by introducing a game centered around the realism of boob physics. Yes, a game centered around the dynamic transfer of mammary mass through human simulated skin and the aftereffects of how said mass affects the bounce, jiggle, vibration and physical reactions of boobs. The project is obviously NSFW. So viewer discretion is advised.

Designer Rathren is attempting to make the simulator include both the unrealistic and the uber-realistic elements of physical reactions attached to boobs. Think of it as the boob edition of BeamNG, which is a car physics simulator that aims to give gamers control of different vehicles under different weight classes and see how they physically react to crashes using soft-body physics deformation. You can check out a brief video of BeamNG below to get an idea of what it’s like.

In the case of Boob Simulator, Rathren explains…

“This projects goal is to simulate boobs with the most realistic physics and graphics possible. Doing so I use the newest technologies like Nvidia FleX [which] isn’t yet and might never even be officially released for UE4!”

 

“This is the very begin of this and there isn’t much content yet and the physics are far from realistic. The video is the best example for whats included so far. You guys are always welcome to give advises and ideas about what could be added to the game to make it as awesome as it can get!

 

The game needs a decent PC but there are changeable graphic options at startup so it should run on most of the PCs.”

If you’re unfamiliar with Nvidia FleX, it’s a particle simulator. It’s used oftentimes for mass liquid or soft body simulation… like impressionable skin or water waves. Soft-body physics can be extremely taxing on hardware and Nvidia has been working quite hard to find ways to ease the processing requirements for liquid, particle and soft-body physics. You can get an idea of how it’s used and what the technology looks like in the demonstration video below.

For now, Rathren explains that a demo is in the works for Boob Simulator, but he hasn’t released it yet because he doesn’t want anyone to steal his content before he’s at least set a lot of the groundwork in place. You can see what he has to offer so far in the video below, which could be labeled NSFW if seeing bare breasts jiggle is an offensive thing for you.

The project is currently being funded through Rathren’s Patreon. He has plans on releasing a demo soon enough with leap motion support, VR support, FleX liquid simulation and an editor so gamers can change the different sizes, shapes, textures and density of the boobs.

Later on in development he has plans to add a reactive face when the boobs are touched, as well as music, collision sounds and different skin materials.

It’s obvious some people might instantly yell “Perv!” but one thing to keep in mind is that Rathren could technically design an API out of this and distribute it separately from his game as a plug-in for the Unreal Engine 4. In this way, game developers could easily load up the API and have easily adjustable boob physics for their game, tech demo or prototype.

Anyway, discussion and suggestions are taking place for the simulator on Hongfire or Game Vixen Zone, and Rathren is expecting to update and release new content on a monthly basis.







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34 comments Categories: Media, News, PC, Videos Tags: , , , ,
  • SpetsnazAIRBORNE

    “INSERT DIRTY LAUGH HERE”

  • ChatWraithShichi

    Not that anyone cares, but skin/boobs don’t stretch/warp like that.

    This project is really pathetic.

    • AndroidVageta

      I wouldn’t call it “pathetic” but I would say that in it’s current form it’s pretty unrealistic. Not to mention the fact that it uses “Flex” means it’s probably proprietary.

      That and it’s not like soft body physics haven’t been around for a while, even in past engines.

      • ChatWraithShichi

        It had better be paired with ‘dong’ simulator. That way they can sort out the physics of soft AND rigid body simulation. hhehehhh nice

      • e92m3

        Oh, I’m sure it’s proprietary.
        As you say, soft body physics aren’t new and this isn’t a particularly detailed simulation, particularly when you take into account the lack of other things being rendered.
        The way the shoulders move around is particularly weird. I would wager there are ay least 3 other physics engines capable of handling soft body at this detail level or better.

    • AuroraMoon

      Agreed. But at the same time I don’t mind as long as it gets guys to actually learn how boobs actually work. You have no idea how many times I’ve seen game mods or some other works out there that involved boobs in some way… only for me to think: “Dammit, boobs DON’T work that way! As a woman the idea of boobs doing something like that makes my chest HURT!”

      When going for realism I think guys should go for that middle ground between hard rigid mounds that don’t move, and breasts that moves WAY TOO MUCH. But it’s difficult getting there for them because most guys literally have no idea how boobs work.
      So.. to sum it up, If it makes guys learn more about how boobs actually work, then I don’t mind. Even if it’s slightly stupid.

      • Lord Darque

        It is somewhat sad that so many designers and modders lack that simple knowledge. Kinda reinforces some of the negative stereotypes people have been tossing around for years.

      • ChatWraithShichi

        That’s my gripe. They’re moving too much. This game is going to be bought by people who will never see a real boob, so the developer has a responsibility to make sure that this doesn’t become some fantastical stretchy-boob propaganda!

        What if a young man becomes brave, having trained in boob simulator for his boob license, and proceeds to try and stretch a boob in real life!

        OH the folly when he hath torn a boob asunder! Embarassment, lawsuit, and more ensue. If only boob simulator had been more accurate.

      • AuroraMoon

        I lol’ed. thanks for the laugh. :)

      • Rathren

        Haha I love that comment. Had to laugh real hard 😀
        I know this comment is not serious but still I wanted to clear up something:

        I actually know how boobs work I am just not far at programming it yet. But I am confident this wont be the case anymore after I release it. And btw the final game will be free.

      • e92m3

        I may not have my own set as a point of comparison but I can still say most of this is not behavior you want to encourage.

      • C G Saturation

        I’m sure what you said is partially true (and it’s easy to assume such), but it’s probably also because, from what I’ve seen, setting up realistic physics for breasts seems to require a pretty complex setup.

        I’m not too familiar with soft body physics, but when using rigid body physics, it seems that multiple bones are required for each breast (any part that moves individually needs its own unique bone), and if you want the mesh to deform smoothly, you’d likely need to have more than 2 influences per vertex, not to mention a decent amount of polygons.

        This all amounts to an increase in required processing power, so I think a lot of games opt for a more simple method that ends up looking unrealistic. I don’t think anyone wants to bog down their entire game for the sake of realistic breast movement.

        If anyone knows better than I do, feel free to correct any of my above statements. My information is likely somewhat dated.

      • AuroraMoon

        I work with 3d models on a regular basis in many modeling programs… and I’m a regular user of Daz Studio. Many of the programs supports breast physics without the need of bones. Basically, you apply certain properties to different body parts so that parts like arms are hard while other parts like the boobs are soft. I’ve managed to hit the right amount of softness for the breasts on my 3d women. So the breasts ends up acting pretty realistically when you animate the women. The breasts even squish the right way if you have the woman press up against a plane of glass.
        But you do bring up a good point in that most video games usually doesn’t have such complex scripting to allow for soft and hard parts of a body. That kind of thing might even require an absurd amount of memory for consoles, etc. It’s surely different compared to 3d programs like Daz studio. But, I’ve seen video games that actually handled breasts right before… so I know it’s not impossible?

      • Oto

        ” But it’s difficult getting there for them because most guys literally have no idea how boobs work.”

        So, what you are saying is that the problem is that men related to video-games are retarded virgins that don’t know a female body nor what do do with it?? I mean, it’s not that realistic simulation of body physics is incredibly hard to do, ten times without the infrastructure to implement it, just pure hardcore geekdom, right?

        You are so full of yourself it’s borderline nauseating.

      • AuroraMoon

        Actually, Body physics are pretty simple to do once you’ve mastered it. I’ve seen good video games with good physics where they had fairly realistic breasts… but unfortunately the “bad” video games that had bad boob pyshics tend to stand out more in my mind due to their sheer “wtf” nature.
        And I’m not talking about losers or virgins, etc. Even guys who’s had sex still have no idea how boobs work. I’ve even seen male artists draw breasts like they were just water balloons taped to a flat chest. And they actually had sex with women.
        Imagine if the roles were reversed here, and it was a bunch of women trying to apply video game physics to a penis and testicles, for example. But snice women basically have no idea what it’s like to have a penis they apply properties and physics to the penis that wouldn’t even exist in real life. What if the testicles kept on bouncing up and down like crazy, as if it was something rubbery and stretchy? Picture it going up and down like a yo-yo. A guy would look at that, and then ask a woman if they even consulted a man on how penises and testicles actually worked. A woman wouldn’t need to be a loser or a virgin to have no idea how men deal with their penises in everyday situations.
        That’s how absurd bad boob physics look to me. Sure, you try to defend that by saying that learning how to make body physics work is diffcult… but the thing is, I’ve seen far too many good examples of body dynamics done right. so I know it’s not impossibly hard.

      • http://thosegamingnerds.com GeorgeofTGN

        This may be one of the most amazing analogies I have ever heard to justify a point. Expertly played AuroraMoon Bravo! (As a guy who looking at the description you listed shudders to think of it)

        I know how boobs work but I would never be arrogant enough to say I knew more than a woman does that’s just silly. I can’t draw though so even if I did draw accurate boobs they would look like a damn inkblot I can’t even draw a circle :(

    • http://www.OneAngryGamer.net Billy

      Well it’s still early on. Also, the idea is that it’s going for variance. So this is likely the wobbliest version of the prototype. I’m sure we can also gather an idea of how the most extreme version of the rigid body will look.

      The real work is in adding the middle ground; skin density and different axis for the physics to transfer mass. I’m more interested to see how this project will look a few months from now and whether the project can be further refined to capture the wildly fantastical and the more realistic elements of soft-body physics for humans.

      • ChatWraithShichi

        True, but it looks scary like they’re using cloth simulation on the skin.
        like the person is made of crepes.

        Plus, if we want boob simulator, we can just play dead or alive beach volleyball , heh, hehehhh… nice

    • tplarkin7

      It’s actually very realistic. Skin can stretch very far. Her ribs were too elastic, though. It would be nice to have women in games where their breasts weren’t chiseled in stone.

      • ChatWraithShichi

        also yknow like…vertexes tearing, and skin turning to triangles, and generally being like a water bag instead of meat and fat and-

        GOD DAMNIT who cares this program is about boobs – if it’s gonna be a stupid program, it had better at least do it right!

      • tplarkin7

        It’s a good start. It’s better than clipping.

      • C G Saturation

        The last time I showed off a 3d model with slightly moving breasts, a bunch of people complained that it was sexist to not have rigid static breasts.

        Can’t please everyone, I guess. Especially people who don’t understand the concept of gravity.

    • Rathren

      I know the video you saw was like from day one I made this :) But I will do my best upgrading the physics.

  • Kyle Jackson

    I need to get off of the internet for today.

  • Jason Mounce

    Man, the Japanese are going to be all over this for their fighting games.

    • http://www.OneAngryGamer.net Billy

      That’s assuming this eventually optimized enough to run on consoles… or the Japanese start making PC fighting games.

      • Jason Mounce

        Street Fighter V for one instance? PS4/PC, etc.

      • http://www.OneAngryGamer.net Billy

        That’s a fair point.

      • e92m3

        Yeah, it’s certainly not in a standardized language right now. 99.99% certain NVidia used cuda instead of direct compute for this.
        It’s interesting that you mention beamng. They recently added soft body support. Has a demo model you can drop the cars onto. It seems pretty decent. Pretty sure it could do this.

      • http://www.OneAngryGamer.net Billy

        I don’t know if BeamNG could do this… they seem to be focusing on specific rigid materials that bend at points and react based on sizable force. They’ve been refining it for years.

        The thing is with this Boob Simulator is that he seems to be using particle flow as opposed to rigid bodies. It would be interesting to see what BeamNG could do tackling a boob simulator and how they would approach it.

    • C G Saturation

      I can assure you the Japanese are already way ahead of this for their breast simulation. From what I’ve seen, anyway.

      • http://www.OneAngryGamer.net Billy

        Well, he did recently update it. He’s making rather fast progress:

        https://vimeo.com/130801512

      • Lord Darque

        That is a big leap forward. Looking much better.

  • Rathren

    Hey Rathren here (the creator)

    First of all my deepest thanks for this awesome report to Billy D!

    If you wanna know a little more about my project check out my hongfire thread:

    http://www.hongfire.com/forum/showthread.php/442003-UE4-Boob-Simulator/page3

    This is the very begin of this and I am actually petty busy until next month. I am happy if you already like what you see but expect big updates soon :)

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