Ever wanted to check out a glitched seed and see how it looks, but then realized there’s not a single guide that contains all the glitched seeds in the game currently known about? Well, here you go.

### Glitched Seed Explanation

This anomaly in seeds can occur if both conditions below are satisfied (in order):

1. All faculty rooms do not connect to any hallway
2. A classroom spawns not connecting to any hallway (for an unknown reason, F2 and F3 glitched seeds very commonly delete their placeholder rooms {they still must spawn regardless}. For F2 and F3, anything -2 or more will spawn 1 guaranteed placeholder room. Remember that they can still spawn regardless, but is rare)

Under normal circumstances, a classroom cannot spawn connecting to no hallways, but due to a bug in the code, the classroom can spawn in all spots when no faculty rooms are in any hallway. If the classroom happens to spawn without connecting to a hallway, since the game isn’t allowed to place a classroom like this, it decides to not decorate the room, making it a placeholder room (all rooms are placeholder rooms until being decorated as the next part of the level generation process).

The chances of finding a seed with any anomaly like this: while not quite possible to pinpoint an exact number, is a very rare chance. See below for estimated chances.
The reason for such a high chance is because you need all requirements below:
᲼᲼᲼᲼᲼᲼᲼᲼᲼᲼᲼᲼᲼᲼᲼᲼᲼᲼᲼᲼᲼᲼All faculty rooms in the map connecting to no
᲼᲼᲼᲼᲼᲼᲼᲼᲼᲼᲼᲼᲼᲼᲼᲼᲼᲼᲼᲼᲼᲼hallways (Very rare)
᲼᲼᲼᲼᲼᲼᲼᲼᲼᲼᲼᲼᲼᲼᲼᲼᲼᲼᲼᲼᲼᲼Getting a placeholder room to spawn when this
᲼᲼᲼᲼᲼᲼᲼᲼᲼᲼᲼᲼᲼᲼᲼᲼᲼᲼᲼᲼᲼᲼condition happens (exception for F2; see above)
᲼᲼᲼᲼᲼᲼᲼᲼᲼᲼᲼᲼᲼᲼᲼᲼᲼᲼᲼᲼᲼᲼(Extremely rare)

Estimated chances of discovering a glitched seed

These chances are currently based with very few data points, so these may be very inaccurate

F1 with 3 notebooks: ᲼᲼᲼᲼᲼1/~800᲼᲼᲼᲼᲼(0.125%)
F1 with 2 notebooks: ᲼᲼᲼᲼᲼1/~4000᲼᲼᲼᲼(0.025%)

• For F1 seeds, you can change it from positive to negative (or vise versa) and the F1 will remain the same, while the F2 and F3 will change. This means that F1 only has half of the maximum possible seeds when compared to F2 and F3
• It’s technically possible to get a 0/0 notebook seed (only feasible for F1), but it hasn’t been discovered yet. If a 0/0 notebook seed was ever found, F1 would finish in 0:00 (tested/simulated)
• Almost all known glitched seeds have the playground or the library as the big room due to the fact that they’re almost always bigger than a cafeteria, which are limited to be smaller
• The seed range limit is between -2,147,483,615 and 2,147,483,615 (including 0 [-0 doesn’t work]), making a total of 4,294,967,231 possible seeds
• You, the reader, will likely find a glitched seed before 50 hours of total playtime
• It’s estimated that only 2,147 seeds contain only 0/1 notebooks and only 74 seeds contain 0/0 notebooks
• All F3’s always have an elevator in the big room (unless it’s a library).
• F1 has 4-5 faculty, F2 has 4-6 faculty, F3 has 6-8 faculty and Endless Random has 4-6 faculty. Keep in mind that the chances are weighted to be generally in the middle of the number ranges.
• The minimum room size is 4×5 and the maximum room size is 7×8, although rooms commonly get squished on one axis, which can result in rooms going as low as 2×4-7
• It’s possible for an elevator or field trip to not spawn if one side of the floor has no space for it to spawn. This can also cause what’s referred to as an elevator crash if all elevators can’t spawn

### Glitched Seeds I – 7 In Total

All seeds listed here are generally in order of earliest to latest found. The amount of notebooks and the floor the glitched seed is noticed from takes priority.

Seed
Notebooks
Floor
Founder
1348486979
0/2
Floor 1
Master_64
-206461537
0/3
Floor 1
Master_64
-1085423692
0/3
Floor 1
Master_64
-635866380
0/3
Floor 1
Master_64
1336630589
0/3
Floor 1
Master_64
201515316
0/3
Floor 1
Master_64
-665728256
0/3
Floor 1
Master_64

Top Founders

The top 3 players with the most amount of glitched seeds discovered

Place
Name
Total
1st
Master_64
7
2nd
n/a
n/a
3rd
n/a
n/a

Rarest Founders

The top 3 rarest glitched seeds discovered

Place
Name
Notebooks & Floor
Seed
Chance
1st
Master_64
0/2 Notebooks, F1
1348486979
1/~4000
1st
Master_64
0/3 Notebooks, F1
-206461537
1/~800
1st
Master_64
0/3 Notebooks, F1
-1085423692
1/~800

### FAQ

Q: How have you calculated the probability of getting a glitched seed?
A: The very first day I stumbled upon a glitched seed myself, I started to log how many times I loaded into F1 and got very interested in how rare these seeds actually are. Since then, I’ve almost always logged how many times I’ve entered all floors, as well as how many seeds I’ve personally found that are glitched. Using that information, I can simply divide the amount of total attempts by the amount of glitched seeds I’ve found (as well as what type it was).

Q: When you say data points, what specifically are you referring to?
A: A data point is every single time a floor is generated and then analyzed to see if it’s glitched or not.

Q: How have you calculated the chances for a F1 with 0 notebooks without any discoveries of a 0/0 notebook seed?
A: While definitely not the most foolproof method, I took the difference between 0/3 and 0/2 notebook seeds and then calculated from there. So while I’ve never personally seen a 0/0 yet, I can say that the chances are still pretty accurate.

Q: How come you don’t account for a F2 with 3 or less notebooks or a F3 with 7 or less notebooks when showing all the glitched seed chances?
A: Well the answer is relatively obvious in my opinion: either the chances of these are so astronomically low that it’s ridiculous to even calculate, or it’s just not even theoretically possible. For a glitched F3 for instance, you need 6 (best case) faculty to connect to no hallways, which is incredibly unlikely (unlike F1 and F2, there’s a ton more hallways for them to spawn at).

Q: Why do faculty rooms sometimes spawn out of bounds?
A: I’ve been unable to find any 100% answer to this, despite how many times I’ve seen it occur. I originally thought that it was caused by faculty rooms spawning on the corner of a big room, but I was proven false by this pretty quickly. The only half answer I can currently think of is that there’s rare cases where a faculty door cannot connect to a big room because some sort of wall object happened to spawn on the same tile. What’s interesting is all currently known out of bound faculty seeds always have 2 or more faculty.

Q: How come your 0/5 2/2 placeholder room F2 seed is considered more rare than any 0/2 F1 seeds when the chances of a 0/5 F2 are higher than a 0/2 F1?
A: It’s actually quite simple: the chance of getting both placeholder rooms to spawn when the first one basically never spawns, on top of it being a very rare 0/5 notebook seed, makes this seed the current most rare F2 seed by far (1/~606,250).

Q: How many hours have you put into just glitched seed hunting?
A: I’m honestly not 100% sure, but it’s at least over 600 hours.

Q: How did you find seeds that crash the level generator?
A: I honestly have no clue. I was just in the middle of doing some seed hunting and then my game softlocked. I’m very glad I found it, but I’m honestly not quite interested why it crashes. I’ve suspected (based on the game logs) it’s because either a room got placed in the void (deep out of bounds) or a room caused another room to turn into a 0x5 room (which is in theory possible?). Since then, I’ve discovered about 15 more like this.

Q: How do you have so many hours in BB+?
A: An immense amount of dedication and curiosity for how many weird seeds exist and how many I can find by myself, alongside speedrunning.

Q: Do you get excited when you find a glitched seed anymore? Seems like you’ve found too many at this point.
A: Only if it’s a 0/1 F1 or a 0/8 F3.

Q: How many hours have you put into this guide?
A: Just as I said with how many hours I’ve put into glitched seed hunting, at least over 600 hours. That’s not to suggest I spent 600 hours alone working on this guide, rather that I work on this guide and glitch hunt at about the same time (switching back and forth).

Q: I’m personally hunting for some glitched seeds of my own, but can’t find any. Do you have any tips?
A: The only thing I can really say is to focus only on F1 and nothing else. Keep restarting and restarting until you see a 0/3 appear (since it likely won’t be any lower). If you’re constantly resetting, you should get one within 3.5 hours (or if you’re extremely unlucky like I once was, it may take up to 24 hours in total).

Q: How can you claim that a seed is particularly hard or particularly easy?
A: Whether you choose to believe me or not, I can look at a map layout and tell you how good or bad it is almost immediately. Using this, if a seed hits a certain threshold (in my opinion of course), I can tell you if it’s a hard or easy seed. Hopefully that answer doesn’t sound arrogant!

Q: How many attempts did it take for you to find your very first glitched seed?
A: It took me ~7k attempts (Seed: 821459638), which is particularly unlucky. This was during a time I wasn’t strictly hunting for glitched seeds, but was rather more focused on speedrunning (and just happened to get this randomly).

Q: Do you think another 0/1 seed or even a 0/0 seed will be found?
A: Do I think someone else besides me will find it? Personally, yes, eventually, but it will be a very long time. As for whether I’ll find one? I actually have recently found one after roughly 6 months of constant searching! A 0/0 is yet to be found by either me or someone else.

Q: Will you ever quit playing BB+?
A: As with every other gamer who exists, you have to take breaks eventually. I personally don’t think I’ll ever actually stop playing this game, but I will definitely take breaks. Breaks aren’t quitting, but simply rejuvenating for the next session!

Q: Why have you split up the glitched and uncommon seeds?
A: Steam has an arbitrary character limit that I cannot bypass, so I simply make multiple sections instead. Otherwise, I’d keep it in 1 section.

Q: How will you handle archiving older game versions?
A: A new guide will be made with the same name but with the current game version. Why separate them into completely different guides you may ask? It’s mainly because it’d make it harder to navigate the guide in its entirety, which I would like to keep as clean as possible. Don’t worry though; when multiple game versions come out, I’ll make sure to link the guides up either through a section on the top.

Q: Why do you not have a section for seeds with The Test?
A: It’s mainly because not only is he not that uncommon, but also because then I’d feel inclined to include a set of seeds for all the other somewhat uncommon characters, which would just be a mess. If you want to see him right now despite this, enter in the seed 99 into Random Endless. The Test spawns very close to the elevator (remember to stay away from the elevator before the game begins, otherwise, he won’t spawn immediately).

Q: How come I cannot find grappling hooks in faculty?
A: Not only are there specific requirements for it to spawn, but it’s also rare. You need to be on Floor 2, Floor 3 or Endless Random, and you need to find a faculty room that is not connecting to any hallways.

Q: Why did all the uncommon seeds get moved to a new list?
A: There were so many sections that Steam could not properly display all the sections when scrolling down the list. For everyone’s accessibility, they’ve all been moved to an archive. This hasn’t affected glitched seeds since they’re the focus of the guide, unlike the uncommon seeds.

### Seed Submission Guide

If you’re currently unsure what qualifies as a seed to submit to this page, this section should let you know what’s currently being added. This should serve as a general guide as to which seeds are good for submissions.

For glitched seeds:

– Any seed that contains less than 4 (F1), 7 (F2 or Random Endless) or 9 (F3) notebooks

For uncommon seeds:

– 2 or more apple trees
– 1 or more grappling hooks
– 2 or more portal posters
– Rooms showing up on map earlier than expected
– Double swinging doors
– Duplicated swinging doors
– Only 1 swinging door to a big room
– Swinging door corner in big room
– Field trip spawning in big room
– Janitor closet spawning in other room (except big room)
– Faculty in janitor closet
– 3/4 elevators close to each other (only for F3)
– Tiny or wide rooms (2×4-7 rooms)
– 1-way walls
– Faculty out of bounds
– Tiny libraries (ones that only have 1 or 2 more rows in each direction)
– Community posters in elevator or windows in elevator
– All faculty in big room without it being glitched
– Tiny conveyors (1-2 long)
– Elevator poking out of wall
– 2 or more faculty inside a room (excluding glitched seeds)
– Nearly all faculty or classrooms being next to each other (preferred to be on F3)
– 3 or more identical vendors or blue lockers next to each other
– Blue locker appearing in any room
– 50% or more empty faculty rooms (only for F3)
– Only 1 item in all faculty rooms (only for F3 with 7-8 faculty)
– Spawn in center of map
– 3 items in faculty
– No field trip (only for F2)
– Missing elevator
– U-layouts or anything as extreme as that (except O-layouts)
– 1 or less math machines on F2
– 3 or less math machines on F3
– Anything else that is very uncommon

For easy seeds:

– Has a mass amount of BSoda, zesty bars or grappling hooks with apple trees
– Can easily lose Baldi
– Can borderline walk around and complete the entire game
– Doesn’t require much skill
Note: currently very strict on taking seed submissions for this seed type

For hard seeds:

– Has a hard F3 layout (usually a U-layout that has annoying classroom placements)
Note: currently very strict on taking seed submissions for this seed type

For impossible seeds:

– Crashes the level generator in any form or has an inaccessible elevator or classroom

For random endless seeds:

– Is somewhat easy to get a 35+ score

Thanks to Master_64  for his great guide, all credit to his effort. you can also read the original guide from Steam Community. enjoy the game.