Quick Search:

Game Information
Release Date
Last Update
Orig PC Gender
Adult Themes
TF Themes

Version: 0.16.3

Version: 0.15.2

Sleepover Makeover

This is CYOA of a 16 year old boy forced into overseeing his 8 year old sister's sleepover party. A little sister who has been empowered by their witch of a mother to help her brother learn a lesson, by joining the party with the rest of the girls.

Through a series of pre-planned activities, the MC must try and maintain his maturity and his masculinity while keeping his sister and the rest of the girls happy. Or just give in and have some fun.


Current Content:

13 activities with multiple variants each
Regression down to age 5 (mentally and physically)
31 endings
Lots of traits which cause both minor and major variations to scenes
Lots of descriptions of the MC at different stages of the regression, including a map of the MC's brain
Embarrassment overload scenes when the situation becomes too overwhelming to handle
580k+ words

PG rating is just for bad language. There is no sexual content.

A 16 year old boy forced into overseeing his 8 year old sister's sleepover party.

A little sister who has been empowered by their witch of a mother to help her brother learn a lesson. A lesson learned through joining the party with the rest of the girls whether he wants to or not. 

He fights to maintain his mind and body, all while trying to keep his sister and the other girls happy.

Emily: Your 8 year old little sister, the brat who is the de facto ring leader of the group.
Kara: A 7 year old classmate of your sister, very smart for her age. Acts as a bit of a 'mother' to the group, often acting as the voice of reason.
Miki: 6 year old little sister of one of your sister's classmates. Shy around strangers, but excitable once she gets to know you.
Sophie: The 9 year old 'older sister' of the group. Can come off as a bit of a bully, but protective of those in the group. Fiercely competitive, but doesn't like losing.


0.16.3 (Nov 20) - Couple more fixes to Kara challenge. Turn on player portrait. Add toggleable min age.

0.16.2 (Nov 15) - Fixes to Kara challenge when winning events.

0.16.1 (Nov 13) - Fix to rogue regressions after Sophie Challenge. Cleanup on conditions for pizza appearing.

0.16.0 (Nov 13) - A Challenging Return

Pizza Time
- The girls are terribly hungry, but the long awaited pizza has arrived. John is supposed to be the one who answers the door but he might be very different person at that point. How will he fare when faced with a former high school classmate?

Cheater Ending
- Cheating to beat Sophie at an arm wrestle now comes with consequences.

Completing Imaginary Friend Dream Rewrite
- Rewrote the fourth dream to be a little lighter in tone
- Rewrote both "Imaginary Friend" endings. Splitting one into 2 new variants

Player Portrait
- Using the same (old) AI generation tech I used to make the NPC portraits there is now a portrait for the PC as well as he gets younger and girlier. Though it only represents a "base" version of the MC there aren't variants for things like chubby or catgirl
- Its currently behind a setting toggle (defaulted off) to see how people feel about it

"Low Happiness" events are now "Challenges"
- Formerly the "Low Happiness" events could only be accessed by being especially mean to the girls. Now the girls will propose those events as "Challenges", regardless of their attitude towards you.
- Which means there are also prizes for winning!
- Though don't expect these to be easy, and if they don't like you, don't expect them to play fair.
- Technical improvements have also been made to them all prevent slowdowns after the game is complete.

Emily's Challenge
- The possible end results for the challenge have expanded greatly in both number and detail.

Kara's Challenge
- Kara's challenge has been re-ordered and re-tooled so the knowledge swapping is spread out in between rounds rather than all at the end.
- Previous "mean" intro spun off into separate event where you can just be mean to Kara for no reason. This "may" have consequences.

Sophie's Challenge
- Fixes to the ending transformations to ensure all routes can be hit (some were bugged and inaccessible before)

Miki's Challenge
- Unfortunately there wasn't a pre-existing Miki "Low Happiness" event, so the Miki challenge is still in development

Other Stuff
- Handle for Kara and Sophie inferiority complex in Mat 9 and 8 regressions
- 12->11 Mat Regression: A little more discussion of the changes to John's marks and what it means about his mind.
- Haphazard pass through the game to correctly react to Emily inferiority complex
- Added in a lv.2 for the "Small for your age" trait and updated everywhere where height was referenced
- Fixed up some spots where player "thoughts" weren't colored correctly
- All the little bug fixes mentioned in the forums, plus the usual random typos/errors corrected


0.15.2 - Couple more fixes. Mainly to ensure everyone can get to endings regardless of age.

0.15.1 - Bug fixes and sundry.

0.15.0 (Mar 14) - Splashing Around

Pool Party Activity
- Choose from 16 different swimsuit options depending on whether you cooperate, whether the girls like you, and how each girl feels about you.
- Head out to the pool and splash around in the water, or just relax and get some sun, just make sure you wear your sunscreen/

6->5 Age Regression
- Now that you're as little as possible all the girls are going to want you in the cutest outfits possible. You can try to resist but at 5 can you really stop them?

Too Much Regression Ending
- If the player reaches the minimum age regression level they can put themselves on a path where they will continue to get younger all the way into infancy.

6->5 Mat Regression
- Regress all the way down to a soon to be kindergartner
- Losing your ability to both read, write and do most basic mathematics

Reading is hard
- All written text now becomes incomprehensible once you've lost the ability to read. This can be turned off in Settings.
- Additional large variant in board game inside the mall if you can't read the shopping list.
- Smaller variations through the rest of the game when text arises.

Embarrassment Enhancements
- High embarrassment can now be mitigated by taking intentional mental regressions
- Having a mind many years older than the body causes distress/embarrassment
- Small rewrite of fallback embarrassment break for when options have been exhausted

New Scenes
- New path through the Sophie Fitness Competition where you can beg Emily to let you stay 16 and even without any of the quirks you've acquired...of course if you still lose the penalty will be even more severe.
- New scene in hula hoop for those with a hypnotic dance trigger.
- Cleanup to diaper logic, now can be in pull ups or diaper depending on your behaviour. Additionally there is a little extra teasing by the other girls in that scene.
- Confrontation with Annie after she learns to take over your body

Old Scenes
- With the new method of getting into the Imaginary Friend content the old Gymnastics Decline has been restored to its former state.

Brain Map
- Additions to identity regarding name
- Additional variants for maturity when thinking about family
- NPC Transformation sequence now reflects in the brain map
- Annie interjects her own thoughts into your mind once you've met her

Other Stuff
- Player thoughts now have a similar coloration scheme to player voice, except this is only primed off of mentality
- Added an NPC description for Annie
- Usual slate of random typos and css fixes
- Fixed journals for Twister at low mat
- Update to Disney Princess quiz to reflect new princesses
- Additional heroine can be selected in quiz
- Mental regression occurs if physical age too far below mental age
- Additional writing option in 10 to 9 mental regression

0.14.2 (Jan 24) - Bunch of little bug fixes for issues reported

0.14.1 (Jan 22) - Brain Drain

7 to 6 Age Regression

- Learning and performing a ballet routine with Miki, now that the two of you are about the same size

7 to 6 Maturity Regression
- Back to learning "All About Me"
- Filling out the remainder of the sheet with all your new favourite things

Bladder Emergency
- Once the player has acquired the Weak Bladder trait they need to be more diligent about their bathroom breaks...otherwise they might have an accident.
- If it happens twice Emily is forced to take drastic action.

Lacing Up Your Shoes
- A bunch of variations when you can't tie your own shoes anymore due to age, or having the knowledge stolen
- Will you ask your sister for help? Or maybe Miki can teach you how to do it? Or will you preserve and prove your capabilities?

Updates to other mat regressions

- Additional content around journal & report card
- 16 to 15
-- Imaginary Friend Variant
-- Agreeable Variant
- 13 to 12
-- Total rewrite
-- Quiz is now entirely interactive, see which cartoon heroine you are really most like.

Brain Map
- Entirely new way to represent the player's mental state.
- A smattering of thoughts about *a lot* of different topics. 20+ sections.
-- These are effected by maturity and traits.
- Color is based upon how "girly" that section of the brain has become.

Journal Updates
- New journal entries & style for every activity/regression for players with maturity 6 or 7

Additions to "Hide in Basement" from Sophie
- If you're a clumsy crybaby and have a meltdown Emily might comfort you like a good "big sister"

Knowledge Updates
- Knowledge gains/losses now come with a notification
- Knowledge added to debug menu

Other Stuff

- I heard y'all liked Applejack so I reckon y'all will enjoy the chance to start talkin' just like her
- "Inept" critical loss in mini-Olympics now comes with extra knowledge to gain/lose
- Flesh out of Boy Crazy trait
- Additional level of Braces trait (endings only atm)
- Additional comments on middle/elementary school report cards

Technical Updates
- Performance improvements, particularly on games that have a long history
- Added "King of Games" option to debug menu which allow for control of mini game results
- Added a background "timer" to help dole out events more sensibly.
- Removed New Game+ (wasn't really useful now that debug exists)

0.13.0 - Trials and Tribulations

Sophie Low Happiness Challenge
- Challenge Sophie to feats of fitness to prove your superiority to the arrogant gymnast.

Getting some new shoes
- Heading outside for the mini-olympics now requires you to put on a proper pair of shoes.
- If you get too small you'll been given a new set.

New place to look for a bra
- Now you can check mom's room to see if she might have anything suitable.

Long Luscious Hair
- Hair with now lengthen as the regression progresses.
- Updates to Hair Braiding event to handle multiple possible starting hair lengths, and how different maturities react to the different hairstyles.
- If you spend long enough gossiping about fashion you might learn something.

Feeling Agreeable
- The "agreeable" trait has now been properly implement. It's a little harder to say no now, you can always persevere but it's easier to just go along with things.

Another challenge from Kara
- A follow-up challenge to the game show, this time it should be more in your wheelhouse, video games. Assuming that you actually remember how to play them.

Regression Updates
- Basically every age regression scene has received a small/medium update. More reactive to certain traits, particularly the new "short" trait.
- 8-> 7 (piggyback) got an even bigger addition with two new routes, one for being carried by Emily and one carrying Miki.

Everything Else
- Fix to journal when age goes below 8.
- Usual typo and grammar fixes; and little logic errors.
- Added ability to stack trait additions.
- It seems like I've removed a seeming abundance of the word "seem".
- Added a few more die rolls.
- Fix Sophie being effected by your language changes.
- Added in a few more "knowledge loss" moments.
- Rewrite of mat 12->11 regression (the video game one).

0.12.0 (June 29)  - Everything is getting smaller

More Regressions
- 8 -> 7 Age
-- Now that you're getting really small it's time for some more athletics with the girls. What's more athletic than a piggy back race?
- 8 -> 7 Maturity
-- Time to put those math skills to the test in your greatest challenge yet. Prepare to face the terrifying complexity of brownie recipies.

Kara Low Happiness
- Reaching happiness 0 with Kara leads to a little competition to determine who is the smartest in the group.

Get Away Endings
- Being stubborn and attempting to escape a second time will end up with you fuzzier than ever. Has a secret ending for those who are diligent about keeping everything tidy.
- Being a little less stubborn still makes you a bit more catlike, but you'll be cute nya?

UI Updates
- Notifications when you aquire a new trait.
- Report card to show how you're doing in school.

Scene Updates
- Hide and Seek Seeking
-- Sophie Variants: Age <= 9, Dainty
-- Improvements to "mindset" stuff
- A few more reactions to your adorable cat ears if you have them.

Technical Changes
- Cases where the text "replaces" on screen now properly use the word replacement filter (like the no curse words curse). So no more "fudging" in one sentence and "f***ing" in another. Thank you to daisycyoas for that catch.

Everything Else
- Content warnings can now be hidden.
- Fix to hand/nails image in the description tab.
- Updates to Sophie High/Low happiness endings to better reflect the relationship.

0.11.1 (April 27) - Fixes to journal entries and endings.

0.11.0 (April 20) - Bored of board games

Board Games

- The board game activity has gotten a much needed makeover. It's got *a lot* of new content, there's shopping and dressup and even some new endings in there. Lots of paths to take and places to explore. Have fun :)

Imaginary Friend
- A series of dreams that can be access from various parts of the game (see walkthrough for more details on where).
- Gives you the largest trait (by words) yet, evolving from being in contact with your "inner child" to sharing all your experiences. Think of all the fun with having your own imaginary friend to take you through the party.
- There are even a couple endings associated with the dreams.

Scene Enhancements/Improvements
- Now you can tell Sophie to stop climbing the tree rather than just standing there. Whether she'll listen to you or not...
- Dressup prompted by successfully hiding in Emily's closet now makes it easier to wear pretty dresses, and even lets you keep it.
- Hiding in the basement is now a little more interesting, especially for clumsy people, scaredy cats and crybabies.
- Non-participation in the Mini-Olympics is now punished in new and interesting ways.
- Getting trapped in the dark now makes things dark for you as well.

- The walkthrough tab now has a link to a Google Doc containing spoiler light walkthrough. Trying to keep a balance between clarity and keeping things spoiler-free, y'all let me know how it feels.

Technical Changes
- Most images are now in webp format. Should have no impact on how they look (unless you are in an old Safari that doesn't support webp), but makes the zip file a few MB smaller.

Everything Else
- NPC descriptions for the teenage versions of the girls for the various high school age epilogues. Note these descriptions are partially shared between endings. So one ending where Sophie would be 20, it still talks about her as a high school girl.
- New ending if you select "Get Mean" a second time in a embarassment break.

0.10.1 (March 20) - General bug fixes with the new activity

0.10.0 (March 17)- The Community Update

Small scene improvements/additions (in more detail than usual so people can see their specific suggestion show up)
- Miki hide and seek "hide under" route a little more fun.
- Reaction for finding Emily hiding in your closet when you'd hidden in hers.
- Improved descriptions of moments where fear traits kick in during Hide and Seek.
- Small mat variant to skinned knee.
- Trying to find a way to contain your new feminine endowments.
- Learning about the issues with girl's clothes during jump rope.
- Softspoken characters now have trouble being heard at the top of a tree.
- Hiding in Emily's closet might result in some impromptu dressup.
- Young MCs who are denied extra cupcakes have a second chance to partake.
- Small commentary on hulaing in a skirt.
- More excitement if Sophie wins the Olympics or you win, but refuse the winners prize.
- Extra choice of a favourite "pony", sure to cause some chaos.
- Small musings on being in a skirt for the first time.
- Some lore updates for background on what this "sleepover" actually is.

Emily Low Happiness Scene
- Accessible when Emily's happiness hits zero
- She decides to teach you a lesson about how much harder it is to be little and how it's the responsibility of the older sibling to help.

Two new endings
- Rejecting a life as Sophie's personal cheerleader leads you into making a whole new group of close friends.
- Rejecting a life as a pudgy super nerd leads you into indulging your interests in a different way.

Bug Fixes
- Fix ending descriptions for new game +

- Description updates to a few traits
- A zillion typo fixes

0.9.2 (Feb 16) - Bunch of little fixes, mostly typos.

0.9.1 (Feb 10) - Hotfix to fix bad assignment, some typos and windows specific pathing issues.

0.9.0 (Feb 10)

Getting even smaller

  • Regression of body and mind down to age 8

Painting Nails Activity

  •  Activity where you...well, I'm sure you can all figure this one out :D

Golden Ending Updates

  • Witness a trio of vignettes of all the fun you can have in your new form. Though depending upon the age, maturity and traits of your character these can go different ways. More will be added in the future.

Freedom of choice

  • No longer will you be denied a choice just because you have a trait. If you're afraid of heights you can try to climb a tree all you want. Key word being try. :)

Not so random events

  • Started implementation of some "follow-up" scenes to full activities. Many are dependant upon age/maturity so you'll have to choose if you want to try them now, see if it changes later, or just avoid them entirely.


  • Fix to Golden Ending not setting age/mat
  • Updates to the trial

0.8.2 (Jan 7) - Hotfix to fix a few bad variables and conditionals.

0.8.1 (Jan 5) - Hotfix to prevent blank gymnastics journal and fix bad conditional in cupcake decorating.

0.8.0 (Jan 3)

The Friendship Update - Grab Bag Edition

- Minimum Age/Maturity lowered to 9.


  • Rewrote all the age 13 journal entries to be more maturity appropriate.
  • Added journal entries for ages 8-10.
  • Slowing working on intermediary steps so the entries degrade more smoothly. (WIP)

New Activity

  • Decorate some cupcakes with the girls, just try not to make a mess ;)

Activity Updates

  • Medium rewrite of the cartoon activity to have more detail and new variants.
  • Small additions in remaining activities which allow you to ingratiate yourself to the girls or to push them away.


  • A new(ish) ending to replace the former ending 3b with something more fleshed out.
  • Updates to endings 9 & 8b to better align with character motivations and behaviours.
  • Better integrated ending 1a/1b into the flow of the trial, rather than being a separate entity.

Everything Else

  • Debug mode re-exposed for anyone who has seen at least 1 ending.
  • Very small lore update to integrate the mood ring a bit better.
  • Sidebar passages converted to pop-ups rather than passages of their own. This deals with a whole bunch of behind the scenes pain/bugs. Will be looking at cleaning up their design in the future.
  • Changed index.html to SleepoverMakeover.html so it's more clear what the actual game is.

0.7.1 (Nov 30) - Couple variable fixes and typos

0.7.0 (Nov 27)

The Friendship Update (pt1)

Hide and Seek Activity

  • This activity has been entirely re-written and greatly expanded.
  • Careful if you've picked up a lot of traits before you do, being too giggly might make you easy to catch.
  • You can choose where to hide from each girl, but your decisions will have consequences. People might like you less if you try too hard, or don't try enough.

Braiding Hair

  • Moderate re-write to this activity to make new hairstyles available.
  • Now you can make your feelings known about the new style.


  • Added some traits to the character in relevant endings. No gameplay impact, but makes it a little more consistent with the rest of the game.
  • Renumbered the endings to make it more clear how they are connected.
  • Added some "hints" about how to get into the various endings.
  • Added some Content Warnings to help players avoid content.

Everything Else

  • Small additions in various activities which allow you to ingratiate yourself to the girls or to push them away.
  • NPC tab now shows friendliness of each girl and the group as a whole.

0.6.3 (Oct 31) - A couple minor conditional fixes and correctly tracking the "reason" for not competing in the Olympics. 

0.6.2 (Oct 28) - Functions have to be called to work

0.6.1 (Oct 28) - Fixed "girlName" being improperly set in endings.

0.6.0 (Oct 28)

Endings Endings Endings

  • An enormous addition of 16(!) new endings (~70k words)
  • Seriously, it's *a lot* of ending/epilogue content

Dynamic Journalling

  • The fruits of all of those "overhauled how the journal worked" now the journal entries will actually change as maturity decreases.
  • Right now this is just one additional variant for ages 10-13. Which sounds like not a lot but it's something like 30+ new journal entry possibilities
  • More variants will be added over time both for lower age regressions and to break up some of the large ranges (ex. adding one for 10-11)
  • Additionally, the new journal entry will appear as a new passage after each activity (including regressions) which hopefully mitigates -some of the scene blending which can occur when multiple regressions stack up.

Updates to a couple of scenes to fix a couple of narrative quirks.

  • Twister, Get Mad Break, Age 12 dressup

Usual minor typo/bug/spacing fixes

0.5.3 (Sep 13) - A bunch of minor bug fixes and typo things. Nothing too exciting. 

0.5.1 (Sep 11) - Patch to fix a few bad conditionals. Sugarvalidator doesn't catch variables without a $ :( 

0.5.0 (Sep 11)

New Content:
Initial implementation of the embarrassment mechanic.

  • All the things that happen to you will slowly build up your level of embarrassment, if it gets too high you'll snap and might do something you'll quickly regret.
  • Currently, there are three different 'snaps' implemented. Each of which is attached to its own fairly extensive scene.

Small variations added to a few scenes.

Behind the Scenes:
Improvements to the word filter

  • You may have noticed in old versions that certain words (such as curse words) would get increasingly innocent/girly as time went on. The technical implementation of this has changed dramatically. It will make things much easier for me to add to/modify, however it's a little wilder. If you see anything that looks like it shouldn't be replaced, let me know.

Using a new "pronoun" system. The text should always be reactive to your current gender. If anything looks out of place let me know.

More improvements to the journal system to allow for some future ideas.

Usual rigamarole of spacing/typo/bug fixes.


0.4.0 (Aug 27)

  • Regression down to age 10 with 4 new detailed scenes to show the changes.

  • Overhaul of how the journal works.

  • Some extra ponysplaining for the non MLP initiated 

  • Experimental User Setting

    • Disable physical age regression

      • This should prevent age from going down and any of the related scenes from playing. 

    • Images 

      • Only in a few places for now (13->12 age regression and 12->11 maturity regression, MLP explanations)

    • Animations

  • New Game+

    • Both endings now have a link to a new game + which should reset you back to the start of the game but with traits/age/maturity intact.

    • NOTE: This is much less tested than other stuff, so bugs are likely. Report as you find them and I’ll try to fix what I can but NG+ isn’t the main focus of the game so it’s lower priority

  • A couple of small trait variant scenes

  • Usual litany of typo fixes

  • A few small bug fixes

  • Fix to “return” when navigating to description/traits/etc…

0.3.1 (August 9) - Little typo fixes 

0.3.0 (August 9) - 

Completion of the "mini-olympics" a series of activities challenging your physical prowess (or lack thereof). 5 activities and about 20k words.
Dynamic NPC descriptions

0.2.2 (July 23) - Fix to remove incomplete activity from 0.2.1

0.2.1 (July 23) - Fix to traits not being applied. More typo fixes. (Pulled and replaced by 0.2.2)

0.2.0 (July 22) - Converted the entire thing into TweeGo. Fixes to journal. Added hairstyle descriptions.

0.1.2 (July 21) - Better handle for underflow of minimum age. Formatting changes.

0.1.1 (July 21) - Minor bug fix (disney princess text), restart button on endings.

0.1.0 (July 21) - First release. 4 activities, 2 endings, regression to age 12, full character descriptions.

Review by dbmanga

Version reviewed: 0.16.2 on 11/17/2023

solid premise. Would love some art to show your character slowly changing.

I do wish there was an option to try and stay like a teenage girl. It feels like there's no way to keep yourself above 11. You end up at 9 or younger eventually after playing everything to completion. I love ageplay stuff and im really happy there's more ageplay stuff, but I'm more of a middle than a little, so going that young or even younger kinda weirds me out

there's an option to stop mental and physical regression entirely, but maybe there could be a way to set yourself a minimum age so you will regression, but no lower than you want

Review by dandan1234

Version reviewed: 0.16.2 on 11/16/2023

Can be really nice to add the MC photo even thru AI like there is with the friends, very nice game and unique in this genere. 

Review by harleythompson

Version reviewed: 0.16.1 on 11/14/2023

currently running into a number of bugs with Kara's Challenge, if you could please fix those at your earliest convience it would be nice, thank you, otherwise the game is generally fun

Review by candyapple

Version reviewed: 0.15.2 on 10/06/2022

A game that has several themes to it that normally would be an instant turnoff/dismissal for me, and yet I've played several times and enjoyed it quite a lot.

Short enough to play and replay in one sitting, yet with several clever aspects to keep you curious (the ever changing school reports, relationship to the other girls and 'likes' being something so creative that I wish it was adopted in different forms through other games - simple yet very effective).

You have to be in a very accepting mindset to play the game, and 'forgive' some of the things that are justified within it, but the game does exactly what it sets itself out to do in all the directions and endings it goes in, whether in 'punishment' or 'reward', and there are enough choices in there to be curious about which can cause what endings.

Overall, I was surprised I liked it, but its one I will play again when I'm in the mood and just want a transformational distraction.

Review by Jhal3mbustion

Version reviewed: 0.15.2 on 09/22/2022

Not a big fan of this game but it was a deep experience. I feel like you are forced to do too many things and it feels longer than a sleepover. Also, there does not seem to be any pattern to how your traits are changed. I feel like there is no way to tell if mental age or body age is going to change and it seems like femininity always increases with body age changes instead of being more nuanced. I ended up using the back feature of Twine to get the outcomes I wanted but I still lost interest in the game nearing its end. Another review said the game was short but it definitely is not. It needs to be shorter. And I did not enjoy the regression content too much, but it was close to being good. The activities were okay because they each had a twist, but a lot of stuff ended up being forced so I did not end up wanting to play it as much as I initially thought I would. I think the ending was a big waste too. The changes revert almost immediately and then there is a trial which felt like pure nonsense. It overall felt too much like I was being encouraged to do things a certain way because of unintuitive transformation mechanics. I would have preferred no real ending because it would have been more satisfying with a sandbox-y feel.

Total Games: 2,152
Total Contests: 32
Total Reviews: 20,587
Total Engines: 33
Total Adult Themes: 10
Total Transformation Themes: 26
Total Multimedia Themes: 10
Total Online Plays: 4,778,897

Support TFGS!