MODIFICATION APP
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!!
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"
Download
Development log
- 0.8.1 - Bug fixes30 days ago
- 0.8.0 - Growth+33 days ago
- 0.7.0 - Milk65 days ago
- 0.6.0 - PetDec 28, 2025
- 0.5.1 - Voice Pack EmbeddedOct 28, 2025
- 0.5.0 - VampireOct 28, 2025
- 0.4.3 - Intro FixSep 14, 2025
- 0.4.1 - Text ImprovementSep 07, 2025
Comments
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Android port pls. Playing on the browser version can be very unstable
Just letting you know that during the bimbo 4 cutscene her dialogue desyncs with the audio. the VA ends up playing one click after when it shows up on screen. not a huge deal just wanted to make sure you were aware.
Is this some new app from the T-Bank?
Of course yes)
Im so ecxited to see what is the next update
Maybe we will see some more content with growth part ?
Like Facesitting or Unbirthing or other bed scenes ?)
I really love your game !
To be honest , I wish I could play this on my phone
Who want Futa in game?
Where is the new content
Wait
the Minigames are fun, though it can be a bit tedious to get to the new paths you haven't done yet. I think it'd work to have a way to select a node on the a path and have you complete all the minigames necessary for that particular node back to back to go there.
hey does anyone know how to get past bimbo 2?
im stuck on it
go to sleep, open phone, click wait, then you can play videogame in the living room
thanks a lot!
I was also stuck there and as a joke i searched for a YouTube tutorial. Turns out there is one...
Where is the new content
Patience
please make autosavve
Remarkable, absolutely remarkable work, loved the Rhythm Heaven reference too
I wish this can be in android too
more save files please
Maybe for variations, you could have the different locations have their own separate routes/paths, for example, The beach can have paths for mermaid/siren as the pet path while the growth path could lead to maybe Kaiju/Godzilla? As a side note, do you think it would be possible to expand further on paths or possibly make paths connect to create a hybrid/fusion path, but only when you complete the required paths for it? What do you think? Do these ideas sound like it could be possible or would it be too much? Love your work regardless and hope you continue on creating this masterpiece.
i really like this idea! a cool path would be a hyper fetish path or a video game nerd path? (as a way for the dev to add his own game taste of video games from 10+ years ago)
Or maybe a scary dom path, like making her into a scary analog horror monster (with big ol knockers) but she is still a super sweet person. :D
Or better yet is to have some paths extend, but branch out to various ways based on the location. Such as the PET path progressing further in the park, with the choice of progressing as a wild wolf-hybrid or as a domestic dog-hybrid. The same could be for HYPNOSIS path, being able to choose between like you said with videogame nerd or dominate business boss. I also can see for a MUSCLE GROWTH path taking place at the GYM, but what would be a nice twist would be to have a WEIGHT GAIN GROWTH path there as well. But again, this is just me typing ideas. I just hope this continues to progress and become a masterpiece of its own someday.
This is amazing so far. One of my favorites and easy to mess with.
Is there possibility for a path where you can make her shrink? So few games have good shrinking content and this feels like the perfect type to explore various sizes between normal and tiny.
I second this, considering that it’ll go the route of shrinking her day by day, starting from a little off the top, to shortstack, then doll.
Hello, I have a fetish for pregnancy—in the most respectful sense of the word. I’m writing this comment to ask if it would be possible to add a path leading to pregnancy (a full-term multiple pregnancy, if possible), which would branch off from the milk path (just before the horns). Thank you for reading this comment.
ditto
I think a Maid Route building off the calling Roomie Master in the Mind Control Route would be a fun branch. could do a mini game involving cleaning?
I hope the pet path can lead to impregnation in the future
The game is exceptional and every path feels better than the previous one
This game was absolutely PEAK!!! I really hope to see more soon and hopefully new gimmicks~
Great game, love the writing and progression
Me gustaría una actualización para Android
Can you please make it available for Android
Please let me play as a girl...
That's like asking for a new game. Going to take a LOT of work.
espera habia mas rutas? crei que era una linea recta, queria volverla una bimbo, le hice crecer los pechos y de ahi me forzo a hacerla crecer de tamaño y de ahi lo unico que podia hacer era hacerla crecer de tamaño, como carajo voy a entender que hay mas rutas si lo unico que me permite es hacerla unicamente mas grande?
ok ya comprendi como cambiar de rutas, aunque no espere que fueran en cosas especificas
I love the content so far, but finding the routes feels a bit strange (it seems to depend on which room you talk to her in?). I think it might be worth re-thinking how that works, or even just making it a choice you can make in the app.
Do you think there will ever be a mobile version eventually?
When is this coming to android i would love to play this?
modification route suggestion multiplication route with the power of the modification app you can turn one Mia into many Mia's
I would absolutely LOVE this
i dont know why but my audio is not balance. the left is more loud than the right
when i play the game, anyone got the same or somewhat related problem?
So... When is it going to be available on Andriod? im asking for a friend😉👍
i remember when there wasnt many comments here now look at where we are you did good Tightly
When android port
My room is the same as MC's ._.
Can we get so we can just make her massive since the growth path now she is still a little small and i also think we should be able to mix different paths to get alot more fun stuff
Same
Can you do a continuous of Vampire story line and create new a Succubus Story line.
Sex shop in development in city add dildos, anal beads, S&M gear some other sex toys and outfits.
Also can you had a add modification that you can change "Mia" back story/past like Mia nymphomaniac pornstar or a nymphomaniac rich CEO but very stressful.
Or add something the you see Mia's existing sex kinks and modify/change them like bdsm/bondage, hating wearing clothes, cum/sperm addicted or something else.
Or add some something like you can change choice which past paths Mia remembers past Paths Max 3 or more something. (P.s just remember Mia is consenting to this in beginning most likely remembers all have it.) Creating a new path like fusing a Vampire path, Succubus and/or a future dominatrix path into a new path/story line.
Please adding future paths futa/dickgirl (dominate & submissive paths), dominatrix, pornstar, prostitute/sex worker, sex slave, nymphomaniac and dwarf/shortstack/petite paths please.
Add a customized feature for her hair, hair color, clothing, any optional tattoos all over her body, optional piercing for her breasts, belly, pussy, tongue and face customization it. Have some stuff already unlocked thanks to past paths/story lines.
Please can you add optional feature for pubic hair for her pussy and anal hole, giving it level system like tame, natural, excessive pubic hair/jungle no matter which path/story line you are on. Plus can you add feature a way the player can increase or decrease Mia's breasts/butt without do the paths/story lines repeatedly. Lastly optional permanent breasts milking feature. You can make so the player only unlock these features after completely certain paths/story lines.
Can we please get a cheat mode so we don't have to do the minigames over and over
I can't get the game to run and when I tried to get it to run with command script it just told me about the godot player and where to download it