1024000^2 Blocks, 2B2T Minecraft Server World Download Project, and Discoveries

by exploraz • 2 months ago

182 121 2 months ago

jetbalsa• 2 months ago

Ah, The 4chan of Minecraft servers, a silly place.

Tiberium• 2 months ago

2B2T really has an extremely interesting and long history, and some of the most interesting exploits/security vulnerabilities found just for it, for example https://2b2t.miraheze.org/wiki/Nocom where the attackers had a blunt server DoS and through it influenced the server owner to report it to PaperMC, and the fix for the DoS gave them ability to track other players just as they had hoped.

In July 2018, 0x22 and Babbaj created a coordinate exploit, using the groundwork laid out in the lag exploit. The two theorized that, if the server didn't return a response for unloaded chunks, but returned a response for loaded chunks, the rough location of players in 2b2t could be approximated. However, prplz's patch returned a response regardless of whether a chunk was loaded or unloaded, requiring a second patch to Paper that would only return a response if the chunk was loaded.
Knowing that the issue would be resolved if Hausemaster reported it to Paper, likely through the method they laid out, 0x22 and Babbaj began intentionally, repeatedly, and blatantly sending CPacketPlayerDigging packets, causing the Paper watchdog process to output a stack trace, which included the line added by prplz.

DefineOutside3• 2 months ago

People have also tried to create merge requests into my plugin to reintroduce the issue into 2B2T.

https://github.com/GrimAnticheat/Grim/pull/1131

bstsb2• 2 months ago

that is quite funny, tbf. looks like the person who opened is friends with eva, a member of "server scanning inc" [1] so they thought it was worth a shot

[1] https://eva.ac/

sterlind• 2 months ago

and then once they had the primitive, they used a compressed sensing algorithm or HMM of some kind to create a live player map. truly APT-level tradecraft.

skerit2• 2 months ago

2b2t is so interesting. It is a toxic place, yet you can find really nice things, builds, messages, ... It's fascinating.

lanyard-textile4• 2 months ago

The highways especially. You'd think they'd be completely dysfunctional in a place like this.

somewhatgoated• 2 months ago

They get griefed once in a while but the highway builders have pretty amazing automation these days so it’s not only very boring to grief they will also almost instantly be repaired.

komali2• 2 months ago

My buddy and I used to plant shitloads of melon farms there. The idea was, anything could happen, but at least you won't starve.

sciencejerk• 2 months ago

With severe weaponized autism, the help of several people involved, thousands of dollars spent, and countless hours wasted, we present you the largest world download project ever

Never underestimate the power of severe weaponized autism!

elmean• 2 months ago

real <3

Netcob• 2 months ago

I have a theory that the modern world would not exist without it.

korse• 2 months ago

Yeah and we'd be better off. The modern world is quantifiably worse than the world we had even 10 years ago. That includes everything in software development and computer science.

Rather than killing this comment, how about we discuss quantification? I actually feel this way too but do not talk about it too much and sort of boil it down to a combination of advancing in age + yelling at clouds and "Stop putting computers in all my stuff!".

Can we reliably quantify that "weaponized autism", i.e. the aggressive monetization of nerds by capital to squeeze profit out of every possible corner of society (as I interpret it in a broad sense), is making things worse. Is it damaging the economy for most people? Making people less happy? Decreasing net social mobility or discrimination? Lowering life expectancy?

FrustratedMonky2• 2 months ago

I don't think this is even sarcastic.

There are some theories that Autism was more useful in the wilderness. More adapted to the old world, not the modern world.

tclancy• 2 months ago

Johnny Blue Skies told me so.

zimpenfish3• 2 months ago

https://www.youtube.com/watch?v=HDyze1YlOrI is a good explanation of what they did

pizzathyme• 2 months ago

Maybe a dumb question but since 2B2T (as I understand it) is a single instance of everyone modifying it to their heart's content, why does the download look like the standard biomes of a fresh minecraft map?

jamilton• 2 months ago

You gotta zoom into the center to see the main chaos. And if you zoom in elsewhere, you can see all the generation differences from different versions of the game.

nom2• 2 months ago

Besides the spawn area, most blocks have never been touched. It's a lot of blocks.

lanyard-textile4• 2 months ago

The world is mind bogglingly big; as are most minecraft worlds, but this one especially.

People sprawl far to prevent PvP encounters.

aeyes• 2 months ago

It is running on a single machine so the player count is relatively low. Today the limit is ~1500 concurrent players but it used to be much lower. And of the players online probably half are bots which don't build.

The map is 30Mx30M blocks so outside of the very center you'll not see that much player activity.

DonutSMP is the largest Minecraft server today, the overworld is 225,000x225,000 blocks and the map is modified wherever you look.

wongarsu• 2 months ago

And because destroying other's builds is allowed most of the impressive builds are hidden in the middle of nowhere. Building within 50k blocks of spawn comes with the expectation that it might quickly turn into a crater or lava cast

exploraz3• 2 months ago

Today the limit is ~1500 concurrent players

The server have a pretty long non-priority player queue wait time with most of ~1500 you mentioned waiting in the queue (about 2/3 of them), even hitting two days last time I read it somewhere.

And of the players online probably half are bots which don't build.

which might be why the queue wait time went insane over the recent years.

nom2• 2 months ago

This was kept completely secret, so three days ago a separate group released their 200k² world download.

https://www.reddit.com/r/2b2t_Uncensored/comments/1tefffd/in...

Ups.

z3t42• 2 months ago

Someone please create a google-map like view service so that I don't have to download the entire dataset.

exploraz3• 2 months ago

It's linked at the GitHub README post.

greggh• 2 months ago

2b2t Place is exactly that.

https://2b2t.place

lanyard-textile4• 2 months ago

For those who don't know: 2b2t is a famous minecraft server known for its true "anarchy" configuration.

You can do absolutely anything on it. Modded client, x-raying, item duplication. There are no area protections. PvP enabled.

It is difficult to leave spawn :)

skerit2• 2 months ago

You can use a modded client, everyone does, but there _are_ some protections. So you can get kicked, you just won't get banned.

lanyard-textile4• 2 months ago

I hand waved the details for simplicity, you're correct.

Egregious bugs like item dupes are also patched; but while they last, they're allowed.

lftl• 2 months ago

It is difficult to leave spawn :)

I know 2b2t is old enough to have had many different eras, but when I heard about and checked it out in 2018, the spawn was barren, of course, but I had no problem leaving and surviving out to a pretty far distance to build a little base.

tapper• 2 months ago

Thanks for the info. I was just about to post as a old fuddy-duddy WTF is this. lol

Phelinofist2• 2 months ago

It is also the oldest anarchy server in Minecraft

DaSHacka2• 2 months ago

home to the dastardly popbob, minecraft's most notorious troll

charcircuit4• 2 months ago

You can do absolutely anything on it.

As long as that anything doesn't consist of putting anything bad in chat or a sign such as a cuss word like "shit" or building a build or map art that someone may find offensive.

If you want to do absolutely anything you need to find a different server.

chadgpt34• 2 months ago

that's because Microsoft said it would blacklist 2b2t (making the client refuse to join it, or the auth server refuse to auth players for it - a punishment normally reserved for pay-to-win servers but the bar has been lowering) if it didn't ban swear words in chat

bastardoperator• 2 months ago

It's famous for being toxic and unmoderated. You can do anything... want to be racist, cool, doxxing people, cool, targeted harassment, you bet your ass.

MattCruikshank6• 2 months ago

I'm so continuously confused why Minecraft doesn't have a show-off mode where a team of people can build something, and then someone else can spectate it, without causing undue server load.

I should be able to give you a URL to some location, and when you click it, it opens up Minecraft, streams the blocks, and you're viewing it.

minecraft://server/loc?w=0&x=0&y=0&z=0

w is the overworld, nether, end, etc.

And if you want to set up a server where you and your friends can interact with each other and make edits, the server should be able to stream blocks from some backing server, but copy-on-write them to your own local storage.

How is this not a thing?

If you want to be really awesome, set it up like bittorrent, where you can share the load, so the central server isn't hammered.

And if bittorrent doesn't really work as a model, then set it up so that "downloader pays" for bandwidth, plus a small royalty for the creator. As a downloader, I get to set up rate limits, etc, to not accidentally spend more than I want to, etc.

This whole 2b2t would cost $2,111.04 to download from AWS, if I'm doing the math right. But that's a trillion blocks. You don't need a trillion blocks to enjoy flying around some awesome maps.

Rohansi5• 2 months ago

I should be able to give you a URL to some location, and when you click it, it opens up Minecraft, streams the blocks, and you're viewing it.
minecraft://server/loc?w=0&x=0&y=0&z=0

Probably no real reason why not... but I think it'd make more sense to take a snapshot, upload, and then have it viewable on the web.

And if you want to set up a server where you and your friends can interact with each other and make edits, the server should be able to stream blocks from some backing server, but copy-on-write them to your own local storage.

How is this different from just loading your world in a server and having your friends join?

If you want to be really awesome, set it up like bittorrent, where you can share the load, so the central server isn't hammered.

BitTorrent isn't going to work. You could shard it so different parts of the world are handled by different servers. But it gets complicated and Minecraft's server software doesn't support doing this out of the box

MattCruikshank6• 2 months ago

How is this different from just loading your world in a server and having your friends join?

Because player location, inventory, actions, are all load on the server. That's why servers have player limits.

BitTorrent isn't going to work.

You and I are talking about different things. I'm talking about serving up the raw blocks alone.

And yes, I know, Minecraft servers don't support static file serving, or streaming from another source, or copy-on-write. I'm saying these are all nearly trivial to implement.

GreenDolphinSys• 2 months ago

It's not in the base game, but there is a plugin that generates a map of your server and hosts it, called Bluemap [0]. It has an example. [1] I always toss it on the servers I host.

[0] https://modrinth.com/mod/bluemap

[1] https://bluecolored.de/bluemap/

zimpenfish3• 2 months ago

A +1 for Bluemap. Plus because it's actually tied into the server[0], all your wacky mods have their blocks rendered correctly instead of confusing whatever map generator you're trying to use.

[0] Plus you can get live player positions, update markers in real time, etc.

zamadatix• 2 months ago

It's easy enough for a server which wants to provide some sort of "easy viewing cool builds" functionality to do it multiple ways such that something native would only be a minor convenience and many would still just use the more customized methods anyways.

2b2t wants to provide a certain anarchy server experience which would not align with that kind of functionality, spending quite a bit of effort in the opposite direction really, so this project is more about fighting to do cool things on the server than it is about dealing with Minecraft limitations.

accrual• 2 months ago

Yes, the anarchy and inability to truly protect anything is part of the appeal of 2b2t.

There was an interesting base project wherein the true coordinates were only known to the top leaders. All other builders connected through a custom client that offset the coordinates to hide the true location. If anyone became untrusted, they were simply blocked from the client and could not expose the coordinates. There was care taken to ensure the area outside the proxy was never shown, block place directions were randomized to prevent reversing the proxy, etc.

The base apparently thrived for months or years before finally being discovered and destroyed.

lunar_rover• 2 months ago

I'm so continuously confused why Minecraft doesn't have a show-off mode where a team of people can build something, and then someone else can spectate it, without causing undue server load.

You'll be confused by Minecraft in general then. Mojang's core team seems like they never changed a bit in all these years despite becoming a billion dollar studio, for better or for worse. Last time I played it, mods can still make the game run twice as fast.

chadgpt34• 2 months ago

They actually added a lot of indirection to the code soon after being acquired. Instead of an array containing the number 1 (meaning dirt) it now contains a pointer to an object with a string name and a hashmap of properties. Instead of drawing a cube in code, it's loaded from an interpreted DSL - all possible calls to that DSL are fixated at load time. The chunk generation process creates and executes a graph of micro-tasks which forms that weird pixel map you see when creating or loading the world. It transitions each chunk through about 15 different states on the way from nonexistent to fully loaded.

They used to talk about wanting to store block update relationships to prevent BUD (block update detector) behavior. I didn't like it at the time, but from a certain perspective it would have been an improvement. Instead they spent their complexity points on pointless memory waste.

2001zhaozhao• 2 months ago

I have a Minecraft-compatible game engine and it'd be an awesome project to host a copy of this world that people can fly around in if there's no legal issues.

chadgpt34• 2 months ago

If you seek legal issues you will find - if someone reproduced a copyrighted work in this world then you could technically be sued for copying it. How likely do you think it is though?

delfinom• 2 months ago

The whole point of 2b2t is anarchy and also secrecy.

Hiding bases is absolutely vital. There are groups with goals to destroy what you build and it is completely a core part of the server.

Having a live external map view compromises the gameplay allowing those griefers significant advantages. And they already do find exploits and such to sniff out targets but a live external map would be server ending.

purrcat259• 2 months ago

This is a great video trying to understand the artistic side of 2b2t as a persistent world (rather than the anarchy its more well known for): https://www.youtube.com/watch?v=09m5BAkkOtw

naruhodo• 2 months ago

A search for vertical 5x5 obsidian/crying obsidian pinwheels was also made, and only 1258 were found, with only 613 within a 25k radius of spawn. There were many more than this in December of 2025, so this is either a sign of other players removing them, or the owner(s) of 2b2t worldediting them all out at some point.

I did Nazi that coming.

lyu07282• 2 months ago

Speaking of bedrock, apparently just seeing a few blocks of bedrock (the random pattern of bedrock blocks) is enough to reverse engineer the exact location on the server. I saw a bunch of clips of streamers accidentally leaking a secret base location while touring the server.

wg0• 2 months ago

Can someone please explain in layman's terms to me what this means?

Background: Only heard the name of Minecraft.

DaSHacka2• 2 months ago

This other comment ITT has a good explanation:

https://news.ycombinator.com/item?id=48181033

The TLDR is a Minecraft server with ""no"" rules, where hacked clients, item dupes, and griefing are allowed. Only thing that's really banned afaik are lag generators and things of that nature that explicitly stress the server and ruin the QoL for everyone.

Fokamul2• 2 months ago

2b2t is anarchy server where every form of cheating and hacking is "allowed".

And thanks to that, people are extremely motivated to find various 0days in anything related to minecraft, to gain an advantage.

This server spawned some notorious black hats :)

Vaslo• 2 months ago

Glad I am not the only one who found that title and the subsequent readme completely unhelpful, despite standing up and maintaining a VPS server for my son and friends.

HN is great but sometimes has the ultimate “tell them about the features instead of the reason why you should care/benefits” posts and many people probably miss out on good links as a result.

Fokamul2• 2 months ago

$3000 for this? Wouldn't be cheaper to just hack 2b2t DB and download it?

arboles4• 2 months ago

Providing a Torrent for this amount of data is not easy whatsoever. We are currently working on creating a Torrent that includes all data, but this may take a few weeks.

What do they mean by this? I understand that it would be a download on the order of 26TiB (if we extrapolate from the recent 200k^2 download, which is a ~1TiB torrent[1]). If bandwidth costs are the issue (certainly it's an issue) they could throttle their seeding speed and let the swarm seed it. That's what bittorrent is for.

[1] https://www.reddit.com/r/2b2t_Uncensored/comments/1tefffd/in...

Eduard• 2 months ago

to my understanding, the 2b2t map has a size of 80 terabytes.

arboles4• 2 months ago

They didn't scrape the entire map. A minecraft map is 30 million blocks^2

zimpenfish3• 2 months ago

https://github.com/2b2tplace/1m_release has it at 24TB for overworldx2+end+nether

jdw644• 2 months ago

Does anyone happen to have world data from a Minecraft survival server? Could you please share it with me? It would be great if it has some player history included. I'm trying to gather about 10 of them, but it's not easy.

bombcar3• 2 months ago

What kind of things are you looking for? Reach out to Pixlriffs, he has world downloads of his Survival Guide servers and likely access to the HermitCraft ones, too.

jdw644• 2 months ago

I've already downloaded Hermitcraft. Thank you, I'll check out Pixlriffs. I'm asking because I have some things I'm curious about regarding Minecraft. Have a great day, and I wish you the best with everything you do.

bstsb2• 2 months ago

hermitcraft's official website features world downloads for S1-10, as well as modded seasons

https://hermitcraft.com/

DefineOutside3• 2 months ago

abyssmc.org was my server and the website has season 1 and season 2 links online while the newer seasons died. I could also get you the earth map with about 100 years of cumulative playtime, the first two seasons maps had much less playtime

jdw644• 2 months ago

My name is Jeong Dongwoo, and my email is doogwoo@gmail.com. If you send me an email, I will explain in detail how to use it. I would greatly appreciate your help

palinnilap• 2 months ago

Minecraft world downloading is an interesting problem, because attempting to solve it by brute force (Loading all chunks in x radius) increases the problem space, because most likely not all of those chunks have been loaded before. So brute forcing it increases the amount of data you must download.

nektro• 2 months ago

woah, the web map viewer even has parallax when zoomed in

z3t42• 2 months ago

I tried it with a vanilla client, without cheats. The spawn point was brutal, bed rock as long as you could see, large walls and lava. And other players trying to kill you. Had to try several times. Found enough tree to build a pickaxe... dig down, wait for the night. Desperately running trying to avoid zombies. Found a hidden farm, plundered, but two carrots left, enough to not die from starvation. Managed to get outside the spawn zone. Found more tree and food. Walked for several IRL days, old ruins everywhere. Gathered enough resources, built a boat and traveled the ocean. Found a large area surrounded by water and high cliffs, perfect for a base, touched nothing on the surface to not leave any trace, built a hidden farm at a mountain, some secret outlook windows, underwater base. And all sort of traps and labyrinths, prepared for the day the griefers would come.

itsthecourier• 2 months ago

basically a post apocalyptic minecraft

michelb• 2 months ago

Sounds like how my parents went to school.

plasticeagle• 2 months ago

I don't know anything about this project, but reading the text in the readme I was very pleasantly surprised to discover not a single hint of the dreaded AI voice in there. Instead, a real human voice shining through. Thank you, whoever you are, for trusting in your humanity and your ability to express yourself without the help of the infernal machine.

gitpusher2• 2 months ago

I agree it's a breath of fresh air!

KolmogorovComp• 2 months ago

I was going to ask how this world is not bot overrun, but I saw that instead players need to pay to get access? (Which is probably the only viable way to keep batting manageable).

Does it mean botting there is just pay-to-win?

gitpusher2• 2 months ago

The server often has long wait times due to the number of players trying to join, so you can pay for "priority access" and jump right to the front of the queue.

freediddy• 2 months ago

So if I download this map, can I run it from my own vanilla Java Minecraft server?

exploraz3• 2 months ago

In theory, yes, you could, if you have enough storage space, and if the download provided (not yet) is a vanilla Minecraft world format instead of a custom one that they are using internally

1024000^2 Blocks, 2B2T Minecraft Server World Download Project, and Discoveries

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