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
- 0.7.0 - Milk30 days ago
- 0.6.0 - Pet71 days ago
- 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
- 0.4.0 - GrowthSep 07, 2025
- 0.3.0 - BimboJul 16, 2025
Comments
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isn't there a way to make an android version,tested it in the browser and the game is amazing
Just a great game with great potential all around!
I like the dialogues, they feel believable, and Miera is doing one hell of a good job bringing Mia to life with her voice acting.
The minigames for the mods are varied, quick to understand, and easy enough to not get frustrated, but challenging enough that they don't feel pointless.
The different paths also offer a good variety. I especially liked Bimbo, Pet and Milk.
(Also, nice that it get's confirmed in the intro that Mia's actually fully consenting and into these whole shenanigans. I like it betterthis way)
Really looking forward for what comes next, and what wacky paths will get added in the future. (I think there was already talk about a Milf, muscle, and shortstack path?)
finnaly after all these years i finnaly have it all
wonder if belly inflation/expansion will be added (or simply put behind thought for this game considering it is about body modification or smth)
anyways cool game
I can’t do the second bat flight mini game, it’s either I’m on iPhone or it’s just impossible, an I’m guessing it’s because I have a severe skill issue
Great game! Noticed a bug with milking where if the game doesn't end before the next bucket appears, you have a window to start milking before the minigame shuts down. If you do, the sound of milking never stops. I had to save and reload the browser to get rid of it.
Thank you for reporting!!
While I couldn't replicate the issue, from looking at the code, I think I was able to make a fix to force the game to stop the sfx if it's still playing.
This will be added to the next update (next week).
INCREDIBLY promising game. The minigames add some nice actual gameplay without breaking the flow, the art is great, there's voice acting which is super rare and quite appreciated. Really just great all around.
If I had to suggest some things (other than the obvious of more content), it would be a sex scene gallery so you can go back and see your favorites again without having to replay minigames and skip past dialogue. Also (at least in the web version) there doesn't seem to be a way to access the settings once you're actually in the game which is odd, but I'm sure that'll be fixed soon.
Thank you for the nice words!!
The pause menu/settings are accessible by pressing the escape key, and I forgot this made mobile devices unable to open it.
This will be fixed on the next update, thank you for reporting!!
Gallery is also planned for a future update!
Please do the weight gain women! Please
Android version?
Not sure if its a mobile problem, but the game seems to slow down at around the third path, no matter which ones are picked. I like the art style and voices, though!
reached the end of all current paths and DAMN! Tightly sir this game is WILD.
I have only done the first transformation line and I am already incredibly flustered, heart beating (then again I am not the hardest to do that to). I wasn't expecting it to be so well done. Honestly the only thing I'm wishing for at this point it also be subjected to being transformed. I love being transformed just as much as transforming others. And for me it's practically always MTF. I really like this game and how you have done it, I look forward to more in the future.
THIS GAME IS SO FUCKING PEAK. MORE CONTENT NOW!
I gotta find an audience for my game like how this game does, I'm screwed. rip snowv
You're mentally ill.
Your the one that pulled this game up
do you need to talk to someone? Are you alright?
um I'm on bimbo level 2 and its telling me to play a game while waiting on her but I have no clue how to do that, can someone please help me Tv
Go to the living room at afternoon, then you can "Play videogames"
Love this game. I'm finally checking out 0.6 and 0.7 after months, but I recently switched to Linux. Using Wine, the game runs very well, but there's some minor visual glitches. If possible, would you consider adding a Linux download for the game?
How do i select a path? everytime i reset, it defaults to mind control
you have to do it based on location and time of day, as well as which events you've already done in your current timeline
i crash at the sleeping part in the new milk section, i play on phone and no other parts of the game crash. just a heads up if you’re able to fix this it would be much appreciated
which sleeping part? the one in milk-2, after Mia gives you a bottle of milk, or later?
also what happens when it crashes? does some message popup, does it just freeze?
what browser do you use on your phone?
you’re right about the part, and what happens is the page auto-refreshes. it consistently does this and i use google chrome as my browser
i’ll try every other path and see if i run into any trouble, i haven’t tried any others since the update.
it happens very frequently, i’d say every 3-5 mins so im not able to finish paths. happens on any path i try
How do I select paths at the start? For some reason, I cannot change to the blue path at the beginning, and when I am doing the Growth path, it stops me at the 4th lvl because "an ongoing event is happening"
try being in the kitchen at morning
its definitly a different type of game in a good way that is cuz alteast to me nothing felt cluncky and the minigames werent just thrown in cuz idk honestly i personaly find them fun but oh well maybe that would wear of after playing this game alot not sure all i know is i like the game and it defenetliy feels alot better then the usual nsfw slop im used to
also i played abit more because i find it intessting beyond the nsfw part and holy moly theres so much to do and it all has voiceacting from how far ive come atleast this really is the oppisite of nsfw slop im used to
Some day we'll be allowed to walk in on Mia in the bathroom, someday
Will Futa be in the game?
Pretty peak gng, i hope u makin hella bag off this. (cant wait until the next update)
edit: Noticed there wasnt a gallery in the game, i would definitely suggest adding one so scenes can be replayed easily
This!!! I have found myself loading save points like crazy when trying to rewatch scenes lol
web Android crashed when i go with milk route
cannot replicate this issue on my phone.
when did it crash? after the milk minigame?
what browser are you using?
bro ist goood butcould use a weight gainpath with all parts expanding form the wieght gain path or a bluebrry path or both
Hey howdey, i have like 2 questions for you.
1. Could you give us a hint as to what the next path is gonna be?(preaty please🥺)
2. Is there any plan on making a android port of this/will there be any android port of this game.
I mostly ask the second question because the website crashes on android(atleast for me that is) a tad bit, and i believe having a download for android would mostly solve that problem.
Anyway thanks for listening to my ranting or something, have a nice day/night whenever/ if ever you read this.👍
where is the second last image shown here inside the game ive done all paths and dont reconise it
it comes after growth level 5 u gotta reset once to unlock growth if i remember right
Can we have a Android versio
The game crashed after switching to fullscreen and now crashes on launch.
Is there any way I can switch into windowed mode without launching the game?
Sorry to hear that.
Can you please tell me which platform you're playing on?
Windows, Mac, Web pc, Web mobile?
Windows
Paste this path on your file explorer
%appdata%/Godot/app_userdata/Modification App
(This should open the save folder on C:\Users\{YOUR_NAME}\AppData\Roaming\Godot\app_userdata\Modification App)
Then, open the "globals.save", and change the Fullscreen value from true to false.
This should open the game in windowed mode again.
This worked.
Thank you.
Dont have a Android version?
with the milk path on like the lvl 3 part the liquid physics crash the mobile version sometimes
Nice new mod tightly, that will most definitely satisfy a lot of people
loved it. can you make so we can go to any point in the path we've unlocked? like, instead of starting from square 1, we can go straight to nipple sensitivity and choose between the bimbo and the milk path?
also, i know it's up to your patrons, but since a growth path got added, a shortstack path really needs to be added too at some point.
Could we make her even bigger
PLEASEEEE make the android port im beggingggggg
Will you make a version for android too?
É bom só que não tem versão Android
Are there any plans for a android port? Web version is very laggy on android