Subject: Jane
0.5 Update - your saves from 0.4 are not compatible.
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Welcome to Subject: Jane - a BE demo with a writing focus and subtle bimbofication angle.
Our antagonist has been experimenting with bio-silicone: silicone infused with nanobots to simplify the process of getting implants. What better "willing" subject to test it on, than a goth girl nabbed from college?
Informed consent? Controlled trials? Experts? All wastes of time and money - just pump the patient full of silicone and see what happens.
This is my first time making a game with RPGMaker. Can you tell what I was inspired by?
I have a few years of erotic writing experience, so I thought it could be fun to make lengthy descriptions of traps as they happen. Hopefully it can make up where the pictures don't do it justice!
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If anything explodes or any bugs occur, PLEASE let me know!
The download contains a "CREDITS.txt" file you can view to see the artists, music, and plugins used in the game.
Consider joining the Discord if you enjoy the game! You can chat there and see previews of updates/images! I also have a Ko-fi to fill the gap of itch's blocked payments!
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The browser version and the downloaded version are the same! The downloaded version runs slightly better. You can also take it to work with you, show your boss, you know.
| Status | In development |
| Platforms | HTML5, Windows |
| Rating | Rated 4.6 out of 5 stars (644 total ratings) |
| Author | Natetheman223 |
| Genre | Role Playing |
| Made with | RPG Maker |
| Tags | Adult, breast-expansion, Erotic, expansion, No AI, RPG Maker, Top-Down |
| Average session | A few minutes |
| Languages | English |
| Inputs | Keyboard |
| Content | No generative AI was used |
Development log
- 0.5 - The 1-Year Anniversary of Subject: Jane96 days ago
- 0.4.1 - Small ChangesAug 02, 2025
- Boss Fight Difficulty Feedback FormAug 02, 2025
- 0.4 Update + Payment Processor FiascoAug 01, 2025
- forgot to re-enable splash screen, whoopsApr 10, 2025
- v0.3.1Apr 09, 2025
- Version 0.3!!!Apr 05, 2025
- Where's Jane?Feb 20, 2025











Comments
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I really love the game so far, and I'd like to share my thoughts about each room:
Room 0 (the beginning): A really nice beginning to the game, and I think it's a pretty decent way to introduce the MC to the audience.
Room 1: Not much to say about this, but it is nice to see the optional introduction to the bio-silicone this game utilizes so much.
Room 2: Nice reference to Metal Gear Rising. Also, the cake is most definitely a lie.
Room 3: Really liked it as it was, kind of a shame it had to be changed though since so many people were apparently getting stuck, but I can kinda see why. The new version of it is nice too, but I think I prefer the old version of this room.
Room 4: I know the dev note says that no one likes trivia, but I freaking love trivia. Plus, the idea of testing one's knowledge and turning them into more of a bimbo with each question they get wrong is actually kinda hot to me. But to each their own, I guess.
Room 5: Now this is an interesting room. The side room's evil mirror, the inaccessible receptionist's seat (which would make for a pretty good trap if Jane somehow got to it, imo), the couch- it feels like an actual reception area.
Room 6: NYM-FOE!! {ahem} It's a really nice introduction to Nym-Foe, although it is pretty small.
Room 7: Also quite small, but I do find the trap used for it to be pretty funny.
Room 8: It's so... pink. I can't help but wonder if maybe inhaling too much of whatever drug is making Jane so oblivious to her surroundings may have a more... permanent effect on her mind in the long run.
Room 9: Ah, the silicone rain room. I once tried to do a no-growth run on my phone browser and this room made doing so nearly impossible no matter how fast I tapped on those boxes.
Room 10: To me it feels nice and cozy, at least compared to the rest of the lab, kinda like an actual lobby.
Room 11: Let's go gambling! I'm glad this one hasn't been room 6 since 0.3, but I still don't trust that freaking roulette table. Side note- nice to see Nym-Foe here and to get an explanation as to what all those loose coins were doing there (I initially would've thought they were left there on purpose by whoever owns this crazy lab). Also nice Lacto Escape reference.
Room 12: This one was kind of a pain to get through even with the extra steam turned off, but it's nice to see more moving parts in one of these rooms.
Room 13: Only room with an f-bomb and the room with the most traps. Once again, the cake is a lie.
Room 14: Another small one, but I honestly LOVE the trope of mimics (things that look like common helpful objects only to turn out to be a different, more hindering entity), and you implemented this trope quite well imo.
Room 15: Definitely feels like the coziest part of this whole game (at least to me), and I do like the reference to Witch Tower.
Room 16: This is by far my least favorite room in the game. It's not a *bad* room, but I wouldn't really call it a *great* room, thanks in no small part to the seemingly random intervals at which the tentacles poke out to attack you.
Room 17: I really like kitchens because I really like cooking, and I really like that you made a trap that fully utilized the oral-injection thing (which makes me wonder if bio-silicone can be injected through one of the *lower* holes as well).
Room 18: I have a difficult relationship with school (and some pretty bad experience with college in particular), but I do like that this room makes you really use your head. I just really love puzzles.
Room 19: I fully agree that every breast-expansion game needs at least one area where you need to be a specific size to pass, and you sir implemented this idea *masterfully.* Easily my favorite room in the game so far.
Room 20: This is definitely one of my favorite safe rooms, mainly because it has a big ol pool, and I love swimming pools.
Room 21: I actually remember watching the video that inspired this room, but I don't think I've ever been able to find it again. I do like how it was implemented into this room though, even if it is tedious to try and get through it without a single injection.
Room 22: Ah, obliviousness room 2. I honestly don't have much to say here that I didn't already say about room 8.
Room 23: Nice to see this one get moved around too, but it is kind of annoying when those tentacles block off the entrance to the next room.
Room 24: The boss battle room. I have a pretty complicated relationship with this room. I'm glad it's easier now than it was in version 0.4, though.
Room 25: I do like this safe room, but not so much that it forces you to bring the delinquent along in order to progress.
Room 26: Kinda nice (and a little funny) to see a slightly more telegraphed room. Also, you did a really nice job with the One Potion Please reference.
Room 27: I honestly just want to see what actually happens should one drink the bimbo brew. Does the drink have bio-silicone in it?
Room 28: More of the silicone rain. At least you can deactivate this if you want to. Plus, another room that makes you use your head is nice.
Room 29: Good freaking RIDDANCE to the delinquent. I hope that if we ever see her again, her breasts are the size of houses and Jane decides to just not help her and instead taunt her with her own katana.
Room 30: So close, but hopefully not too close (I kinda want there to be a room 40). Really sorry about your cat, btw, but at least she was able to help Jane escape, albeit posthumously.
One last little piece of criticism: I really like the main kink of this game, but one thing I don't like is having to either reduce or completely disable breast expansion just to see where I am in the room when the max silicone gets too high and the amount of silicone held is close to that limit. I get that it's realistic to what Jane's view is probably like, but if we can put Jane's portrait in the background somehow, it would make it a whole lot easier to get to those silicone tanks.
Still a good game, all things considered.
I usually never comment on itchio but DAMN the quality and passion that went into this game. I will follow your work with great interest
Great game so far to be honest. Though, I did have a few questions.
1. Is there any way to lower her maximum cc?
2. Is there some sort of gallery where you can view the images?
3. Do you need to beat the game or get close to the end in order to unlock the cheats option on the computer at the beginning? If not, how do you unlock it?
Glad you like it!
1- You cannot lower your maximum CC.
2- There is a gallery, access a teleporter to go to it once you've beaten the game.
3- There are no cheats at the moment.
Played the browser version and was unlucky enough to overfill at the second gas room. Seems like the game faced a paradox as, I'd already fallen, but it's not allowed to knock people out in gassed rooms. I couldn't even open inventory and hadn't saved (that's on me). forced to start over.
I'll look into this! I haven't heard of any issues with that room but I'll test it.
Is the game complete?
no
Where's the BimbOS key in the newest version? There isn't a backroom in room 18 anymore
It was never in the backroom of room 18. Search room 18 and try talking to Nym-Foe.
It's on the server behind the computer trap in room 18. The backroom was just a test for the RFID tag anyway (as was stated in a dev note prior to its removal).
hey how can i unlock last two imagines that have unlock condision TBD
You can't. They are not in the game yet.
TBD means "to be determined", and the reason they are listed as such is because, as Nate said, the image sets are not yet in the game.
when is the neck chapter of the story will be released
*next
Should be on April, I think.
It's peak.
NANOMACHINES, SON (all i wanted to say, good game)
Every time I check this page for an update I see Nate's PFP and mistake it for Giygas at first glance lmao
yo Nate, i forgot which update this is, is it the one with the present at the end, or is it after that
Will the game download an update?
Most games on itch.io do not download updates. I've only seen one game even have the capability to check for an update via a main menu command. It would be best to assume there's no auto update function for most Itch.io games.
Cannot be played on phone ?
can move but can't access to setting
The in-game tutorial at the start shows how to do various things on mobile. Tap with two fingers to open the menu/settings.
Thanks
any future games plans
This is really a great game, especially in terms of art. It's so good that I can't find any words to describe it. In short, this game is really amazing!!!
I love it, and anyone who has contributed to it
hey I had a save at floor 20 and now its completely gone, I had it saved this time so idk what happened
How to get it?
Nym-Foe, later on there's a "boss fight" where you have to drop pallets on her DBD-style
Thank you
hey uh how do you save on browser? thought suspend test meant save and just lost a lot of progress
Use "Archive Data" in that menu.
Maybe a Bigger size butt would be nice
Fun little thing came to my mind, if you plan to increase the size cap, why not make Jane, you know, break your screen? :3
Aside from that, I really loved the game. I am excited for what will come next.
Project is not abandoned; look at the update history for a rough schedule.
sorry my bad, You mentioned the the 'abandoned' word there, so i get shocked, not read further XD. Then I read again, I am like huff.
Btw Man this game is lovely. A Big thank you for this beauty, and for your quick response.
Are you planning on making an android version? Because the web port works just as fine but im just wondering
no
I enjoyed my time with this game. Playing it for the first time on version 0.5. I do have some issues with the game tho.
1 - There is some sort of bug where if you navigate by clicking, there are some tiles that just make you stop in place until you click again. This happens even if you clicked to a tile that is ahead of where you froze, and this tends to happen within the entrances to bathrooms within the safe-zones.
2 - This one is more preference. I get that Breast Inflation is the main focus, but I feel that Jane's Butt could get alot bigger than what is shown with her avatar. Especially when her boobs can get unrealistically huge. Maybe the final size of her Butt when at Full Hip Inflation can be the final size for Reduced instead, and then the Full Butt Size for Full can get even bigger? If you aren't able to get it drawn, or can't get the artist who did do it back on board, than that's understandable.
Other than that, I don't have any other problems that I think won't be addressed in future updates. Great game so far!
Yours Truly,
RokiDusa
An addendum to my original comment:
Will this game receive a Download version for Mac as well at some point?
Well, now I'm kinda curious. I know there aren't any cheats atm, but if/when they ARE added, what kinda cheats would they be, exactly?
On an unrelated note, as much as I like the expansion, I'm kinda iffy about the fact that, after a while, Jane starts to take up almost the whole screen, making it impossible to see where you're going. I get that it mirrors how much Jane might be able to see, but I don't think that really excuses blocking the player's view and making it harder for them to get to the silicone tank.
Also, I think it'd be REALLY funny if cheats made certain interactions not happen.
I'm pretty sure if Jane were to go through any permanent changes, it would either result in a bad end or occur after leaving that crazy laboratory.
I got here because I thought this had porn, and tho I feel like the tentacles definetly could have done something and I'm not the greatest BE supporter, I did like the game. Here with hope that the next update arrives sooner than later
Love this game. Probably my favourite BE-focused game out there (in fierce competition with One Potion, Please). I wanted to share some of my thoughts.
The Delinquent never pulls her panties back up after the table scene unless you use a silicone tank (neither leaving her behind, blacking out, nor using Return to Safe Room does either). Maybe the player could be given a choice after the scene to have Jane point it out to her? In addition, as much as I love that scene overall, they seem a bit too oblivious, with too little to justify their distraction, at least for the Delinquent. Simply rewriting it to have them keep reading the papers on the table wouldn’t be too hard, but changing it to be something more distracting, like a BimbOS tablet or something, could potentially make even more sense. Maybe the Delinquent could decide to try her luck accessing the internet or something, given that it'd be the first tablet (aside from the ‘damaged’ rooftop one) that she’d have seen in the facility.
Regarding the Dev Note in room 29, I feel you’re too harsh on Idiot Plots. I understand that it’s personal preference, but as long as the decisions the characters make are in-character, and not the result of an Idiot Ball, it’s not bad writing. The scene is perfectly serviceable, I think, even if it could probably be written a little better. Perhaps it could work letting the Delinquent’s pre-fight banter be more hostile to give Nym-Foe more grounds to get physical, giving the Delinquent more reason to make another attempt at fighting despite knowing she doesn’t really stand a chance.
I also broke the game (on web) at one point, after rewatching the fight scene I opened another window and when I clicked back the game’s visuals were completely unresponsive, though I could still hear sounds and it still responded to input.
I just kinda interpretted it as Nym-Foe not liking the delinquent (personally, I don't either) or giving her preferential treatment since she isn't a 'patient.
Oh, for sure Nym-Foe doesn't like the Delinquent, I was just putting out my idea for how to potentially make the Delinquent act a bit less unreasonably stubborn in that scene.
eta on next update?
This game is updated around every 4 months, and the last update was on December during the game's 1-year anniversary. Therefore, we should probably expect to see the next update sometime during April.
Is there a possibility of an Android version of this game?
I don't plan on making an Android version, but you can play it in your mobile browser.
As someone who has only played on browser, it works shockingly well, and runs surprisingly smooth for, what i assume is a RPG maker game
those tend to not play nice on mobile in my experience, but this downright runs well, only major issue is that the audios muted, and the RFID is a tad jank because Jane keeps moving when trying to open the inventory, and the latter cant really be fixed imo
Have you tried using Joiplay?
Would it be possible for you to add an autosave feature? I just quit without saving and now have to restart the entire game.
I have that problem too
also someone pls tell me how to get 17500 max silicon
thx gang ur the goat
just finished the game great work love it! but still idk how to get the 4 digit number😭
Hidden around map one at qestion one at frist time robot rest after poker room
how is going natetheman223 i played the game and it was amazing i can’t wait for more of the story and you can count on our support for your game no matter what my friend
Why does progress not save in browser?
can you make so it does.
Progress saves in the browser. You can save from the pause menu. If you do that, and the information is gone the next time you play, the issue is from your browser probably automatically clearing data.
My browser is doesn't do that I checked, when I close the game on the broswer and open it again it restarts me, I might not be the only one, just a suggestion like a backup you could make it so it gives you a code that you can put back to get to your original progress
Mine saves just fine in browser
I use Chrome and no it still doesn't work help
are you using incognito mode? cuz nothing saves with chrome's incognito mode
Sweet game, can't wait to see more progress!
Alright, I'll admit the references got me pretty good. Especially the red potion. Though in this case, she'd be getting a bit more than just the red one...
METAL PIPE?
how do I get all the medipens