Baldi's Basics The Ultra Decompile
What is this decompile?
This decompile is a place with a lot of content built into the classic version of Baldi's Basics. It's like playing classic but with all of the new content around (remaining its classic style).
WHERE CAN YOU PLAY IT? Every main desktop platform and even Android! Heck, you can even play in your browser with the possibility of playing on iOS (instructions here).
What kinds of content are inside?
- A second or third floor. An elevator system.
- Adjustments you can make to spice things up.
- MULTIPLAYER! Competitive (playing as Baldi) and Cooperative (beating Baldi with other players).
- Carryovers from other Baldi's Basics games (BIRTHDAY BASH!, Camping Field Trips, etc.)
- Fresh new modes (Hide & Seek with Baldi and Multiplayer).
- Play between two schoolhouses (Classic and Grand Opening).
- 7 Unique items.
- 10 endings (Classic and Grand Opening).
- Unique and improved mechanics.
- And a lot more!
Feel free to learn more. There's a bunch of content waiting for you in this mod.
DISCLAIMER: This decompile has tons of features that separate itself from Plus. It's never intended to be the original game. Although it does have Plus items and characters, it's built through Classic with legal functions, and no core features are implemented. If there's any concern or anything not allowed in this decompile, please reach out and I'll comply.
Is this the end of the mod?
Well, technically yes. This mod has been in development for five years, and a lot has changed throughout time. Due to my demotivation, it's best to leave this game in its current state. Remember, the source code is available below if you want to continue yourself. Don't worry, you can still download the mod and chat with the community.
As of now, I still plan to update the Grand Opening schoolhouse. However, there won't be anything new until like 2026, when I'll get motivated to finish that again.
Want to see old versions?
Here's an archive of every version that I (or the community) had saved.
All the way from V1.0 to V3.0.4 (Windows & Android). Some versions were skipped as I didn't have the files. Do not worry about V1.4's crashing issue, as that has been resolved.
Other Links
GameBanana: https://gamebanana.com/mods/53042
GameJolt: https://gamejolt.com/games/bbtud/513238
Discord: https://discord.gg/TNudpDTKPr
Have fun!
Download
Install instructions
For Browser & iOS:
If you're on an iPad or iPhone, you will be directed to open this link and add it to your Home Screen to start playing! If you do not know how to add the game to your home screen, here are the instructions!
If you're NOT on an iPad or iPhone, and rather using a laptop such as a Chromebook, you can press the "Run mod" at the top of the page. It'll load, and you can start playing right away! However, for better performance and the ability to play offline, you could install the game from the same link above, which the browser will prompt to install on your device.
For Windows:
Download Windows, then extract the zip file. Double-click the Baldi's Basics TUD executable and enjoy!
For Mac:
Download Mac, then double-click the Baldi's Basics TUD app. You may be prompted that you can't launch it. Just allow it in settings under Privacy & Security. Relaunch it and enjoy!
For Linux:
Download Linux, then extract the zip file. Right-click and access the .x86_64 file properties. Under permissions, check "Allow executing file as program" in order to run the game. Once applied, double-click the Baldi's Basics TUD executable and enjoy!
For Android:
Download and run the Baldi's Basics TUD installer. You may be prompted that "your device is not allowed to install unknown apps from this source". Just go to settings and allow the source you installed it from. Then tap on Baldi's Basics TUD installer again. Verify the game using Play Protect (which should pass) to finish the installation. When installed, tap on the app and enjoy! It's recommended to turn off Unknown Sources after installing.
Development log
- Quick Compatibility Update (Now Support Newer Devices)Apr 05, 2025
- Source Code of BBTUD IS NOW OPEN!Dec 14, 2024
- Android Update!Oct 05, 2024
- Captions Fixed! [3.0.4]Aug 06, 2024
- SECOND PATCH IS HERE (3.0.3)Aug 05, 2024
- Patch 3.0.1Jul 06, 2024
- THE OFFICIAL V3.0 UPDATE! (5 Year Anniversary)Jun 29, 2024
- V3.0 AnnouncementJun 20, 2024
Comments
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when event
what event
who event
where event
Event ? Is It Fog, Lockdown, Real Lockdown, Party, Ruler Breakege,Flood,
you got all 7 notebooks now need to is get out but you still can
17 PLAYERS
Hey Alex,Why the game is kicking me out from multiplayer mode?
For what reason?
I also have infinite profile loading and i cant enter the game I tried on pc and phone and still have infinite profile loading.
Seems like an internet issue.
elephant hit
how do you get cheets
I don't know. The top left button is a thing.
i dont see a top left button, sorry if im bother you i don't do this a lot
oh you meant tab -_-
No, I thought you were in mobile. But yeah, I should had said tab as well.
its ok
also, how do you turn off null mode -_-
Had you failed 5 times?
beat it or reset data. uh-oh. AGAIN.
wait is this usable for unity or is it just a game
Clarify?
Find 1 Mistake In This Story
Because it's from the original game?
The Letter Notebook Is Noteboos Notebooks Is Spelled Wrong
thats ofc original game also. pracitce is also spelled wrong. noes? what's that? ...
Also I might re-install this since I un-installed it cuz my phone kept on crashing it might be fixed this time idk I'll see
These comments are really active dang
I am on iOS, as much as I search to try finding how, I have no clue on how to get the application on my Home Screen. Can anyone help me? :(
press the Share button (that's the square with an up arrow) on the bottom and scroll down until you find "Add to Home Screen", tap that. (edit: you also need to confirm the prompt confirmation.) then go to your Home Screen, open up the game and play!
HOW BELOW
How To Get This :Requires Cheat Menu Get All The Exit’s Exept For The Elevator Put The Elevator In The 2nd Floor Then Collect The Last Exit And Get On The Elevator Before Null Arrives Then He Blocks The Elevator But Your Still In The Elevator And You Go Below
I had a stroke reading this and idk how to do it and why does capital on EVERY word should only be at beginning of sentence and cheat menu in null style requires beat null style and uh oh I comment again oh no I will definitely be flabbergasted for commenting just a SINGLE time now
SeenWonderAlex add tutorial at the game please
I swear if I see another one of these comments, I will fill 'em with the Venom and eliminate 'em, other words I Minute Maid 'em, I don't wanna hurt 'em, but I did, I'm in a fit of rage, I'm-
I swear if you stop blowing up my notifications and check comments that you're not apart of, bigger things will happen. Last warning.
I still love the game. It has camping and random farming maze
Hey SeenWonderAlex, I realized this mod is kinda similar to yours.
I was already aware. Was in contact with them so I didn't mind.
Lets be honest, This Is one Of The few Baldi Games That is Really Good. I love it, Bad Luck that now Is discontinued
That texture is borrowed from another mod and it's colored red ... if you suggest stuff like this again, you will be blocked from the comments section. Last warning.
But fr tho, that hammer is in dire need of a new texture tho
I can't really find a suitable 3D model, so that's why it's a 2D sprite.
Also, saying that, check out the prototype design of the Reflex Hammer and say that again.
Ok, the prototype design looks worse. But I feel like the hammer could be recolored to match the d
Are you thinking about the hammer color when Dr. Reflex is red?
WHY DO I COMMENT KEEP GET BLOCKED !! AEAEAE OH NO
I WILL NEVER COMMENT ON THIS PAGE AGAIN...
bc you wont chill with the repling
You Too You Won’t Stop With The Updates
Wrong guy bro
I Have A BBTUD Acount But Whenever I Go And Come Back It Doesen’t Save My Progress And It Happens To Other Games Too
It doesn't save everything.
what doesn't it save?
Stop From The Updates Everyone
hmm yes I think my last comment was 4 months ag
This happen when I try to run the web version on Android
Okay, that means you don't have enough memory in your device to run the game.
My phone is a low end device, only 3gb ram, Thanks for telling me
ok
Hey Alex, nice game. I really like it, good job on it. Sad that you are not updating it anymore, but, whatever, it’s still good.
I'm going to try and mod this game and import steaks egg house
if you double click on the X button on the main menu you can skip the V-V-V-AEYYAYEYA line AND the credits
"That's it, you're banned, have a good night."-
CaseohSWAGood mock lol
Question:
SWA, will you make another mod someday, or is this just a one-off?
prob not
yuh, but I'm still gonna ask cuz yes.
Can you pls add Diet Bsoda?
No.
Why?
if you add Diat Bsoda ill be happy and rate this mod 5 stars
Nitrogen monoxideuh ohYa sure think I never return? :)
Absolutely yes
After 76 days you return?
Why does the Math machine not give me a notebook even thought i godt the problem right
What math machine to be specific? And if the numbers keep changing, there's no notebook there.
The one at the almost bottom right classroom at in the normal school and yes the numbers change but the next problem solves itself and then the math machine just says " MATH "
There's no notebook then...
to get notebook from math machine go to normal mode more and then custom and once play set notebook max 9 and math machine work also math machine also work in birthday bash mode
How do i unlock null style in browser?
Go To Birthday Bash And Beat The Full Game You Could Use Cheats If You Want After You Beat The Birthday Bash Game mode Go To The Princebles Office To Meet Null But Activate The Error Baldloons And Visit The Princebles Office Null Will Shout At You And After The Talking The Game Will Reset You Will Not Lose All Your Progress After Playing You See Null Styles All Everywhere When You Play You Can Not Use Cheats And You Can Not Exit The Style Untill You Beat The Style Enjoy Playing
you lied! i cannot see any null style anywhere!
Watch a tutorial on YouTube.
Did You Wait Untill The Baldloons spawn And Then Go
I did but my game just crashed
When The error Ballons spawn go to null in the princeple office
You wait for the baldoons to spawn, then go to null.
If you did that and it's still crashing, the best I can say is "that means you don't have enough memory in your device to run the game."-SWA I think.
That or you're doing something wrong.
i just realied you always capitalize EVERY word
I Like The Game But I Am So Sad Because I Am Playing On Browser But In The Null Style Bossfight The Walls Are Not Moving Is It A Update
Is it because optimization is enabled?
I Turned It Off But The Walls Are Not Moving I Am Playing On Browser
Oh, so I kinda remembered I removed it in the newest version. Didn't mean to do that.
Could You Please Add The Moving Wall On Browser Back
In the next update. Can't update now because browser data would be reset and I have to make a new link.
Wish the items didn't count as "cheating", kinda defeats the purpose :/
fr bro
I only did it because it was boring to me that people uses legendary apple all the time when I saw the videos, but for the next patch, I'll revert it so you can use collected items.
Yes, it's kinda my fault 'cause Legendary Apples are pretty much easy to get now.
you could just make it so that the legendary apple only spawns in mystery rooms. Or make the apple cost a LOT more than it does now.
Or add some sorta "one god apple per run" limit.
Hmm... I'll do this for now, but I like the idea of "one god apple per run" limit...
Okay, I shortened to 100k. 1M was a bit too much.
how the hell did that happen
I Have A Chromebook And It Is Touchscreen I Pressed Birthday Bash And I Pressed Select A Lot Of Times
what touchscreen chromebook doesn't exist...?
You Could Serch Chromebook Touchscreen
Dude Why I Is Everyone Is Asking Fior Updates :(
Man the real lockdown is so spooky and made m quit instandly
I'm completely changing it soon, don't worry.
What Is The Reveal Of The Guy During A Real Lock Down ?
Huh? Rephrase?
Of The Guy During A Real Lockdown Who Is It ?
This is how the Guy During a Real Lockdown looks like
BUT U SAID NO MORE UPDATES
He's not, it's just small bug fixes.
Yeah, but not until like 2026.
Ya.
I also have a question for thou, will thou maketh another mod?
Everyone Has To Stop For Updates If It Updates Too Much It Can Start Lagging
yay
I love the mod and im stil wondering who the dangerus man is
"Guest" who is back
Back again.
Guest is back.
Tell a friend.
add more blue cabinets to hide in and more to open
sadly, the creator won't add anything new to the game anymore
There will no longer be updates.
Why Is There No More Updates SeenWonderAlex ?
stop asking for updates
You also have to stop.
OH NO. I AM SO GENUINELY SCARED AND I WILL... IDK BUT idk
man why is everyone scaring me by a million and making me go insane... I will edit everything that went wrong and one of the legends behind it tells me to stop
I've been waiting for these whirlpools for a week now
Bro It Says The Day Week Month Icon It Had Been 3 Days Not Weeks
please stop asking for updates- oh directly above this SeenWonderAlex replied to me "You also have to stop."