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
- 0.11.0 - Breast Expansion+28 days ago
- 0.10.0 - Ass Expansion (+Guide)69 days ago
- 1st BIRTHDAY!!92 days ago
- Birthday Q&AApr 29, 2026
- 0.9.1 - Locale BugfixApr 24, 2026
- 0.9.0 - GothApr 19, 2026
- 0.8.1 - Bug fixesMar 14, 2026
Comments
Log in with itch.io to leave a comment.
Wait how do you get the weird route between default and breast growth?
from the starting state, fail the breast expansion minigame fully 3 times and something may happen
can i put my balls
In yo jaws 🗣️✨
Any chance of a native Linux build in the future? I usually run it through wine, but the latest update crashes for me. Proton gets it working again, but I'd love to see native support. Fantastic game either way, cheers!
This was really cool but I'm hoping for more modifications
It could be fun to have a shrinking path
Yeah if you fail the growth mini games also makes sense like with ass
The console games are awful. I know they're just an "extra", but they're not worth playing.
true, he somehow chose my 2 most hated games
You should be able to enter her room after you finish a path
I really love the female character voice
she did a grate jod
Hey j have a question, what content does update 11.3 have? Because i already download the update and try to play it, but i didn't find anything new because i have done the bimbo route, hypnotist, large tits, grow, vampire, goth and pets play as well. Do i missing something here?
it's just bug fixes
False
Can you pls add a gallery for all the unlocked sex scenes and TFs?
Also, night TFs like Vampire and Werewolf (maybe after Dog 1 or 2 for this).
+1 for the gallery
W game but please add a confirmation button to the reset option.
Screen doesnt rotate on android if you can patch this later on id be grateful
You should a yandera tree path
whens the next update?
very potential huh
Can anyone help me how to get on the milf path? and how to get 4 Breast Enhancement
there is non breast 4. it goes to three so far and then bimbo
oh Thank you, and what about the path of the milf?
When will Turkish language support be added?
yakladım seni xd
help me what to do if the game takes a long time to start. I've already tried clearing the cache, disabling background mode with the entire app and restarting the phone
got one question tightly, how do i get the path between the default state and breast expansion lv.1, pretty confused there
You must fail the breast expansion mini game 3 times
meme is right i was also confused {Ty MemeDevil}
I had a ton of fun playing what was available!! I think all the scenes are sexy, all the mini games are fun and easy enough. I can't wait for more, If I could give suggestions for paths I'd like if you could combine paths like a Gothic Pet, or Bimbo Growth etc. I'd also love to see a Chubby/Fat path, a Pregnancy path, and perhaps a Futa path? And I would like to see in the future you could use it on NCPs like the girl at the cafe I think it would be fun. Anyways that's enough me yapping
10/10
Love the game 10/10 just confused, i got everything done but i saw a black box with ???, is it accessible in the game or is it not out yet?
W game
Cow-girl path is the best past
Could next be hyperpreg/fertility/preg expansion?
bbw path or a milf path?
Well growth is kinda like the milf path but theres other path which she is dominant
What's the roadmap for updates, if i may ask?
I have three requests, a belly expansion path, (I know it’s weird but I see a lot of comments saying that) and if you fail the growth one three times you get a secret shrinking path which she becomes just big enough to handle our cock, and of course the tomboy/muscle path which you’re probably about to release thanks!