MODIFICATION APP
is a 18+ transformation-focused erotic visual novel game in development!

Synopsis

You are given access to a brand new MODIFICATION APP on your phone. A shady developer tells you that you can use it to modify your roommate any way you see fit - and even more she's into it? What will you be able to do? How far will you be able to go? Only way to know is to dive in and start MODIFYING!

About

The project has been in my mind for a long time, as a game I always wanted to exist. A game mostly focused on fun transformations and the fun events that come from those scenarios.

Credits

Game by: Tightly - https://x.com/tightly_dev
Mia VA: Mieraleeeem - https://x.com/mieraleeeem

Support the Project

If you too want to see this project continued, get early access, exclusive WIPs and vote on what will be implemented next, you can support it on Patreon or SubscribeStar!!

Patreon SubscribeStar

Because of itchio's bot problem, any comments with links will be automatically deleted.
Either way, don't click random links in the comments claiming to be "updates"

Updated 4 days ago
StatusIn development
PlatformsHTML5, Windows, macOS, Android
Rating
Rated 4.6 out of 5 stars
(1,894 total ratings)
Authortightly
GenreVisual Novel
Made withAseprite, Godot, Clip Studio Paint
Tags2D, Adult, ass-expansion, breast-expansion, giantess, Hentai, mind-control, Monster Girls, NSFW, transformation
Average sessionA few minutes
ContentNo generative AI was used

Download

Download
Windows - MODIFICATION APP 329 MB
Version 0.12.3 10 days ago
Download
Mac - MODIFICATION APP 356 MB
Version 0.12.3 10 days ago
Download
Android - MODIFICATION APP 430 MB
Version 0.12.3 10 days ago

Development log

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Comments

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Viewing most recent comments 1 to 40 of 969 · Next page

Hello tightly i have only one question you gonna ever make a discord server?

Doing route 10.0 and its some absolutely deranged behavior from MC i love it

Hey tightly! If you don't mind me asking. Would would you say is your favorite part about working on this game so far?

(+2)

I generally have fun with everything!

The most creative part is the planning/brainstorming phase.

But I enjoy making the art, minigames, animations, game design, etc.

VA editing and adding SFX to everything is the most boring part.

(1 edit)

That's great to hear! I can't to see wait you add next

(+2)(-3)

Hello can you add futa or body swap or pregnant

is there a way to make it work on mac ver 10.14?

Hey im not sure how to switch my path i maxed out growth and got to breast expansion level 1 and dont know how to explore other paths

(1 edit)

Go to the mod app and press reset, you can also buy the think that makes you go back on the Gimmickstore

How does one do the new modification line?

Deleted 1 day ago
(+4)

after replay the game again, i notice in the pet modification, i think it could be a nice idea to have cat girl when you failing  to turn her into dog girl. 
the idea was already fitting with the minigame, you try to make her listen to you, and if you fail, then she start to become a disobedient catgirl. the trope can be as a bored catgirl with no care, but secretly wanna cuddle with player
this is just some idea

Sinceramente eu me diverti bastante jogando, particularmente estaria interessado em uma rota "sem modificações" ou algo assim, meio que uma rota feita se você falhar em todos os minigames em sequência? Seria interessante. 


Uma coisa interessante também seriam rotas mistas, não estou me referindo a todas as rotas (isso seria exaustivo de programar, dublar e desenhar), mas algumas específicas que fossem escolhidas através da votação dos patrocinadores? Bem, só deixando uma ideia aí. Dito tudo isso, obrigado pelo jogo.

So your name is actually Jhon, or Done?

Tôi là người mới và không biết cách cài đặt bản mod mới sau khi hoàn thành bản mod đầu tiên.

hey tightly, when using third person pronouns it says she's and he's but also they's instead of they're, just letting you know

Regardless of the pronoun selected, the VA's should be in the third person (or omit the pronoun entirely).
Some older paths might have them wrong and are planned to be fixed in the future, so if you find any paths with any issues, let me know (currently I believe only Pet has wrong pronouns recorded)

Why is it showing a version that isn't out yet??

The current game version is 0.12.3 for windows/mac/android, you're playing the older 0.12.0 version.
This last number doesn't differ in actual content; they are only bug fixes.

If you download the game again, it should be the correct version.

(+3)(-1)

I pasted the entire Bee Movie script as a name and it crashed... :(

Is the web broke or something???

(2 edits)

This seems to be an issue on your device during the initial loading of the assets, either some were not loaded or got corrupted in some way.

I've updated the web version to 0.12.5, which should validate this and provide feedback if it fails.
Please try and see if it's fixed.

How do I unlock these two?

(+1)

Repeatedly fail BE or G for their respective opposites

Falla aposta growth lv1 como 3 veces.

Las dos escenas que aparecen cuando esta en estado base, hay mas o solo esas dos?

Anyone know what to do? Im stuck on 28/37 routes explored. I have all growth/mind control/expansion/ nipple/bimbo/milk and pet...cant seem to find any way to get the remaining routes 

If you stop by the coffee shop they give hints there.

(-1)

Hi, dear Dev, will the nexts update have some FMG themes ? 

Aunque se algo de ingles me gustaria que estuviera en otros idiomas. A mi me gustaria en español

Hey! Sometimes, the screen just goes entirely gray in the middle of scenes?

it should not.

When does that happen?
What device are you playing on?
And does reducing the Quality in the settings fix it?

I'm on mobile, but it's tagged as being runable on a mobile browser, so... I will try reducing graphics tho

hey everytime i download the new update and i open the game its the old 0.11.0 version. hope im not being stupid or something

if you downloaded the new version from this page, it should be the latest version 12 (you can check the version at the bottom right in the main menu)
What device are you downloading for?

I had this sort of problem with an update a while back. Try deleting the old installation before you extract the new files, that's how I fixed it.

Me he descargado la nueva versión para android pero no se ha abierto,se ha quedado pillado el logo. He intención de borrarlo y volverlo a instalar, borrar datos, caché, reiniciar el dispositivo y demas pero no me funciona.

(1 edit) (+1)

Hey! What size is the apk? Sometimes itch stops the apk download before it should, and it becomes un-installable.
It should be 452mb.

Please try to download the game again and install it.

If that doesn't work, what does the error message say when installing?
And what's your android device?

Pesa 452 MB. Pero no me da el problema al intalarlo es cuando quiero abrirlo como cualquier app y se queda el logotipo de la Apple ocupando toda la pantalla. Tengo una tablet de Samsung y la versión Android es 14.

Could you please take a screenshot and paste it here?

No me deja colgar la imagen, pero aparece el logo en grande ocupando toda la pantalla.

If it's just the Godot logo, that means the game is loading and you just might need to wait for a while for it to bootup.

If you can't attach the image here, you can send it through tightly.games/report

I assume this isn't meant to happen when i try and start a new game. Playing on web browser.

(1 edit)

Hey! Yes, it should not.

What are you playing on (pc/mac/android/iphone)?

Also, does refreshing the page fix it?
If it does not, just to double-check, could you open an incognito tab and let me know if that fixes it?
This seems like there was some issue with the initial loading of the assets.

It seems you have fixed it thank you very much.

(+2)

This was such a gem holy crap. First off the gender choosing aspect is so nice it's hard to find games where you can play as a girl :P  second the art is just so amazing and third... the damn voice acting the best part of the game in my opinion:) can't wait for more 

(+2)

Still patiently waiting for the muscle growth path (ps. im not being sarcastic im genuinely waiting with patience)

(+6)

Could you add in a gallery? I really don't wanna play through the whole game just to watch the scenes it's a little annoying

(+2)

id subscribe to your patreon and donate but i'm broke the game is probably one of the best visual novels i've played you can feel how much effort you put in to it i wish i could donate  :(

(+6)

Hi Tightly! Big fan of your game. The game is sick and well designed. I got you some ideas for the game that others may like. First of all, the pet. I know that it's already in the game, but some people may like cats more than dogs (like me), so if you would consider making her a cat, it would be cool. Second, pregnant. I think it would interesting for her to just randomly get pregnant. Maybe on each stage she will get pregnant with more and more children, so please think of that. The last is fat and muscular. I'm pretty sure you are already thinking of adding the muscular modification, if not, then I gave you an idea. The fat one will of course be the opposite of muscular. Also, think of making continuations for modifications, or a mix, so we can mix modifications together. Maybe you can also add a second roommate.That's all I have to say. I enjoy your game and I hope it will be continued. Again, big fan.(I hope the comment is too big. If it is, please don't be mad)

what do i do when she goes to the mall?????

go to your phone and press wait then go to the living room and play video games

(+2)

The game is great and all, but it could be nice if there were more stuff to do at the end of a route without resetting.

(+3)

Hey Tightly, I have played around with this app for a while, like since Breast Expansion or earlier, played both PC and Android. I really liked what it has going on, and I'm hoping to see what can be added in the future.

I sometimes see info about at the end of a thread we can go to Mia's room to do stuff but it just says the door is locked.

I am really curious about the buildings and beach areas, and I want to see them get a lot of activities, same for home, like bath or shower scenes or interactions.

I want more cool stuff in the shop. TP was the currency right? The Vampire plushie was fun, so any more of those would be cool, maybe a Rabbit plushie for a Bunny Girl for spring time. Hopefully more minigames too.

Also, kinda strange to say I'm sure, but could you also make a Normal Route for Mia? My idea is we are exploring all of these options but we haven't even tried to just go with the flow without modifications, so why not simply put a tracker in the paths section of the game telling us we can just ask her out like a normal couple, maybe a joke where Tightly is our wingman or something, or this Route is not shown at all, a secret route, and we have to figure it out, maybe the coffee shop receipt could give tips or guidance.

Anyways, these are things I think of when playing your game. Please be safe, thank your for this game, and good luck going forward in this games development.

Oh and please consider all of what I brought up in this comment, the normal route felt clever and funny, and it was nagging me when I last played.

Can we get a Linux version?

Can I download this on iOS?

(+2)(-1)

How do I get these two paths I'm missing

(+2)

You fail the breast expansion mini game for one and for the other you fail the growth mini game. You gotta fail them 3 times by the way

(+1)

You're a god

(+10)

Please make her muscular😭😭
(+1)

Is there any way to access unlocked events? I didn't see an option for a gallery or a way to trigger them again.

(+7)(-3)

like to see muscle grow and futa. that be nice 

(+1)

Hi Tightly! I've really been enjoying the game so far, especially the minigames. I have some recommendations for some new paths that would fit well for Halloween but only if you have time for it. 1- A werewolf route would be kinda cool to see but would probably need more mechanics and planning. 2- A ghost route would be interesting and pretty fitting for Halloween and even though it might be hard to pull off, it would still be pretty cool to see. And the final one, 3- A alien route would would be pretty cool to see in the game and could have some pretty cool interactions. But these are just suggestions and whatever you do with the game, I'm sure it's gonna be awesome!

Good Luck on working on the game!

Viewing most recent comments 1 to 40 of 969 · Next page