STORY (COMPLETE): 

In this story you play as a customizable Chara who has fallen into a monster kingdom under Lake Ebott. 

This is a very normal Undertale AU fan game.

Everything is fine. 

Nothing is wrong.

You can definitely trust the voice. 

FEATURES: 

  • Adopt a goat dad today 
  • Meet a helpful flower
  • See Read about beautiful scenes
  • Date a skeleton
  • Go through mazes 
  • Solve puzzles
  • Play in the snow 
  • Date a second skeleton 
  • Make a lot of friends!
  • Or don’t, you can ignore them. That’s cool. 
  • Boss Fights! 
  • Date a third skeleton?
    • Uh ignore that one
  • And most importantly of all
  • Die! Have fun! 

ROUTES: 

Friendship: Who needs romance when you have the power of friendship on your side?

Flower power: Meet & date a nice flower who does not try to kill you at all nope no sir-ee. 

Lt. Blue: Meet & date a super cool dude who just loves to have a fun time please ignore the axe behind him, he is such a nice skeleton. 

Punny: Meet & date a humerus monster that always stays chill because nothing gets under his skin. 

Skeleton 3: Why would you do this to yourself? 

DISCLAIMER:

Undertale (c) Toby Fox

Underswap is an Undertale fan AU created by Popcorn Pr1nce

This version was written & programmed by Darkpetal16

Music by HeatleyBros on YouTube


WALKTHROUGHS:

Complete walkthrough by ★TwinklePhoenix★: link

Fog maze walkthrough by ★TwinklePhoenix★: link

Official general walkthrough: link

Official romance walkthrough: link

Updated 20 days ago
StatusReleased
PlatformsHTML5
Rating
Rated 4.9 out of 5 stars
(142 total ratings)
AuthorDarkpetal16
GenreInteractive Fiction, Adventure
Made withTwine
TagsCozy, cyoa, Dating Sim, Exploration, Fantasy, Singleplayer, underswap, Undertale
Average sessionA few hours
LanguagesEnglish
InputsMouse, Touchscreen, Smartphone
AccessibilityColor-blind friendly, Subtitles, High-contrast

Development log

View all posts

Comments

Log in with itch.io to leave a comment.

Viewing most recent comments 1 to 40 of 192 · Next page · Last page

how did you make me like the love at first sight trope???
10/10 game, favorite route is the Lt. Blue route

OMGGGG I FINALLY FOUND THE SECRET <3

Was it the passcode to the book in the Librarby? What was it?

(1 edit)

yup, can't tell you but I'll give you a hint, it's on another completed game (;

Deleted 2 days ago

I was looking forward to sans but ended up with papyrus instead. Never thought of him until mc talk with cinna about him and I be like.. huh??? Tbh the ending is really beautiful I cried a bit but it's all happy tears

I've always choose kindness because I love the feeling of being kind

It's indeed really good to playthrough

not quite sure how this works, and i think more than three people have gotten to this point before me, but the [redacted] soul is interesting. also +Wingdings 100% hes silly. also im too lazy to go to the other page but slumbertale sans is my close second favorite 

(+2)

update got my legs chopped off

i have bravery soul trait, trying to pull papyrus with me, but when i attempt to do the you look around to spot the voice it just shows <3 BRAVERY TRAIT instead.......... help?

Deleted 144 days ago

personality guide????? anybody hello help im lost?????????????

(+1)

Click on romance walkthrough

Sans- attracted to any soul as long as your bright (so choose all happy options)

Papyrus- multiple souls (the 2 I know for sure are determination and bravery)

Gaster- ONLY wise

Flowey- same with sans, any soul and you can date him

yes i know but there isn't "You look around and try to spot the source" action there's only the words BRAVERY TRAIT and i need personality choice guide blud!!!!!!!!!!

There isn't? I just tried it and there was that option

(I chose the Bravery trait)

because you stayed cheerful

i don't wanna be cheerful i need to be living pessimism in every IF!!!!!

i want to be pessimistic but i am "confident" for some reason when i choose anything except for cheerful choices

Pretty sure that IS for papyrus! That's his first interaction for you to date him.

(1 edit) (+1)

Again amazing game. (Sorry for all the comments) I feel like it would be cool if there were side stories here like in Underfell

Of course you don't have to :D!

Edit: didn't do Sans's route so I didn't know there was already extra scenes for him

(+2)

There's one thing similar between the Underfell and this one and it's that gaster is low-key a yandere (more so in this one lol)

(+1)

Don't get me wrong I love this, but how (and why) is Underswap so much darker than Underfell 😭

I do like how it is darker since it would be assumed that Underswap would be much brighter (ig?). It's a neat twist :)

For some reason I can't romance Flowey? I followed the romance walkthrough exactly but I can't choose him when talking to Aaron :(

(3 edits)

Er. I tore up the notes and got the option now but both walkthroughs explicitly say not to do that so I guess I'll see how I go.

EDIT: Turns out I accidentally activated the Papyrus flags, I guess.

EDIT 2: NOW I'm stuck at "You go down the stone steps." Itch won't let me put an image here but the box is tiny and all I can see is the box, those words, and the back arrow.

EDIT 3: I restarted the game from the beginning trying to limit how much I loaded saves or pressed the back button and didn't get stuck this time. I got stuck at the "grim reaper" monster instead, the exact same way as I did at the steps, and couldn't follow the walkthrough for that part, so hopefully that's not...too important? I saved around that spot so it should be fine to try again later. I should add, I got this same problem in the Horrortale and Slumbertale IFs. But not once did I get it in the one for Underfell, and I haven't tried Mafiafell yet. Also, I'm using Firefox, and I tried switching to Chrome for a second but the problem still happened - so it's not likely to be a browser issue.

I am so love in with this game. 

(+1)

I nearly cried at the end 😭 Why can't I have a happy life with a cute boyfriend too 😔

Passcode 1 hehe :)

(+1)

*claps woops and cheers* ANOTHER WONDERFUL GAME!!! WONDERFUL STUPENDOUS LOVELY!!!!!!!!! and for those who need it i found(?)  code so i'll drop it down.. im lazy
























xY07BB13Zf16

I might be late but omg passcode 1 seems amazing--

(1 edit)

i need more games like these

(+4)

Anyone know what the passcode in the book at the librarby is ? I'm struggling

passcode 2 :)

passcode 3? hehe

(1 edit)

It is just me? but


When i play Windings route i get the friendship route, even if I technically had intimate  conversations.


Maybe I missed something? But I followed the walktrough or its the correct one? 

 Someone help pls

(+1)

oh gosh, this made me cry. i love it so much!! <3 papy

(+6)

I love Sans and Papyrus but there is something about Wingding that just gets to me. I love how possessive and affectionate he is. I wanna keep him.

This game warmed my heart. I loved the little notes they wrote to each other, and Wingding's messages in his route made me melt. 

This was amazing. <3


(1 edit) (+2)

... wow. 

what a journey!

Underswap never had been my favorite au, I often would just go past it, but your IFs are my actual favorite passtime to read, so I gave it a try.

And boy I'm so glad I did! I usually go W.D route first, always, but this time I decided to give Papyrus one a shoot, just to be graced with the wingdings message all along the way in a smooth reminder I'd have to replay for my favorite skely boy. 

Paps route is super fun, super chill, I crave more of this cozy feelings in any future extra/bonus scenes you may add!

But W.D route? Woah. Just woah. You got me feral here, my sweet protective crazy scientist, how much I adore how you write him, underfell him is amazing, mafiafell my favorite, but this one? Such a sweet surprise, all his scenes got me giggling and smiling like a fool, thank you for this, his notes with paps and sans are also really, really, wholesome. (Also pass 1 sounds fun!)

Thank you for this game! ♡

(+1)

ok wtf bro this IS AMAAAAZZZING why WHY am i only finding it now. good gosh this is bloody good man 

(+1)

honestly both passcode 1 and 2 are interesting, hope i see either one of those next time :]

honestly they all sound interesting but im hoping for code 1 :)

extreme excitement when thinking on romancing the hell out of Paps. just something about puns is so attractive for some reason honestly. I admit my sense of direction is awful that I was running in circles in the two areas that had the character going in different directions. but it only made me more determined to keep pushing forward.

there was a thrill to searching for the notes while on the side hardcore romancing Paps [and later Sans when playing a second time through]. I restarted quite a few times due to missing items, and questioning where one would earn a pretty coin to buy items [which when did learn it was truly satisfying]. 

I also enjoyed the random bits with Gaster popping up, and just had a dark lil thrill going against what was asked [and flipping the screen when my desire to go against the order was useless] I got caught at the lab as I did not know about the patience of waiting a bit longer.

utterly caught off from Gaster's voice or well his humming. truly alluring with the voice actor that I ended up a second time with the ending before going to the walkthrough to find the answer.

from there I enjoyed the rest of the game and romanced both the skeelton brothers [excluding Gaster, as Siren Call Gaster got in my head seeing him as a guardian figure rip] also the surprise in the lab was such an interesting bit and just truly a good shock for what is discovered.

once completed I enjoyed reading the lil drabbles, a tasty and lovely bonus

Passcode 1 sounds very interesting :))

you this is so cool. And THERES MORE games like this?! what a treat(≧∇≦)

I need help.. Who is Cinnamon? Otherwise, this game is so good! I'm really enjoying it. 10/10

Nevermind, I found her! :)

passcode 2... hehehehe

(1 edit)

ive romanced everyone but flowey bcuz the game wont give me the option to find the third note in snowdin town and i keep dying wtf am i doing wrong ;-;

(ive gotten all good true happy endings except the romance flowey/asriel? path) 

EDIT: nvm i have now romanced le flower boy :3

You finally got the flower. Good for you!

(+1)

what is the ending song?? i can't find any credits for it but it's so good, it stuck on my head literally 😭

(+1)

the game is so good but i was on the papyrus route and got killed by gaster how I stop that from happening 😭😭

(2 edits)

did you drop the notes? if you did, that's practically a game-ender. try not to drop the notes, at all costs. be sure to collect all notes as well! if you're at the point where you "don't get a choice" to keep the notes, wait for 16 seconds! there's also a general walkthrough available if you need more help. hope this helps!

Omg I made an account just to comment, Handplates. I love your game.

(+2)

It's beautiful......All of your games are the best and the sweetest and encouraging stories. The ending was just so heartfelt and the music, so calm and majestic, I loved every part of Underswap. Thank you so much for this masterpiece.

The ending is beautiful ❤️

Viewing most recent comments 1 to 40 of 192 · Next page · Last page