Taking Back The Internet With The Tildeverse

September 14, 2024 by Dave Rowntree 25 Comments

For many of us of a particular vintage, the internet blossomed in the ’90s with the invention of the Web and just a few years of development. Back then, we had the convenience of expression on the WWW and the backup of mature services such as IRC for all that other stuff we used to get up to. Some of us still hang out there. Then something happened. Something terrible. Big-commerce took over, and it ballooned into this enormously complex mess with people tracking you every few seconds and constantly trying to bombard you with marketing messages. Enough now. Many people have had enough and have come together to create the Tildeverse, a minimalist community-driven internet experience.

A collaborative Minecraft server hosted on a Tilde site

Tilde, literally ‘ ~ ‘, is your home on the internet. You can work on your ideas on a shared server or run your own. Tilde emphasises the retro aesthetic by being minimal and text-orientated. Those unfamiliar with a command line may start getting uncomfortable, but don’t worry—help is at hand. The number of activities is too many to list, but there are a few projects, such as a collaborative Sci-Fi story, a radio station, and even a private VoIP server. Gamers are catered for as long as you like Minecraft, but we think that’s how it should go.

The Tildeverse also supports Gopher and the new Gemini protocol, giving some people a few more options with which to tinker. The usual method to gain access is to first sign up on a server, then SSH into it; you’re then taken to your little piece of the internet, ready to start your minimalist journey into the Tildeverse.

A couple of videos after the break go into much more detail about the whys and hows of the Tildeverse and are worth a chunk of your time.

We’ve talked about the ‘small web’ before. Here’s our guide to Gemini.

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Super NES Cartridge Pulls A Sneaky, Plays Minecraft

August 31, 2023 by Donald Papp 24 Comments

Sometimes it’s the little touches and details that make a project. That’s certainly the case with [Franklinstein]’s Super Nintendo (SNES) Cartridge Hard Drive. It might only be an enclosure for a solid-state hard drive with a USB interface, but the attention to detail is what really makes it worth checking out.

A SNES cartridge has a pretty standard clamshell-ish construction, but fitting the solid-state drive plus cable adapter turned out to be a bit of a challenge.

Since [Franklinstein] wanted the cartridge to look as original as possible, careful measuring and cutting was needed to securely fit the drive and provide an unobtrusive USB-C port tucked discreetly into the cartridge’s opening. We like the technique of using a 3D printed fixture to take up the slack on the cable by exactly the right amount, resulting in a 100% rattle-free end product. A custom Minecraft sticker label provides the finishing touch.

Being able to plug it into a computer and actually play Minecraft is a neat gimmick, but it really shows that some careful construction and assembly can be what makes something look like a clean build instead of a hack job. Take a look at additional build detail and pictures, and check out the video of the build, embedded below.

Hey, if sneaky cartridge mod tricks intrigue you, then you’ll absolutely want to check out how it was possible to play DOOM on a NES from a cartridge. Maybe that’s the next evolution for a cartridge with a Minecraft label on it?

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This Week In Security: Minecraft Fractureiser, MOVEit, And Triangulation

June 9, 2023 by Jonathan Bennett 2 Comments

Modded Minecraft is having a security moment, to match what we’ve seen in the Python and JavaScript repositories over the last few months. It looks like things started when a handful of burner accounts uploaded malicious mods to Curseforge and Bukkit. Those mods looked interesting enough, that a developer for Luna Pixel Studios (LPS) downloaded one of them to test-run. After the test didn’t pan out, he removed the mod, but the malicious code had already run.

Where this gets ugly is in how much damage that one infection caused. The virus, now named fractureiser, installs itself into every other Minecraft-related .jar on the compromised system. It also grabs credentials, cookies, cryptocurrency addresses, and the clipboard contents. Once that information was exfiltrated from the LPS developer, the attacker seems to have taken manual actions, using the purloined permissions to upload similarly infected mod files, and then marking them archived. This managed to hide the trapped files from view on the web interface, while still leaving them exposed when grabbed by the API. Once the malware hit a popular developer, it began to really take off.

It looks like the first of the malicious .jar files actually goes all the way back to mid-April, so it may take a while to discover all the places this malware has spread. It was first noticed on June 1, and investigation was started, but the story didn’t become public until the 7th. Things have developed rapidly, and the malware fingerprints has been added to Windows Defender among other scanners. This helps tremendously, but the safe move is to avoid downloading anything Minecraft related for a couple days, while the whole toolchain is inspected. If it’s too late and you’ve recently scratched that voxel itch, it might be worth it to take a quick look for Indicators of Compromise (IoCs).

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Minecraft In Minecraft On The CHUNGUS II

May 27, 2023 by Elliot Williams 16 Comments

Minecraft is a simple video game. Well, it’s a simple video game that also has within it the ability to create all of the logic components that you’d need to build a computer. And building CPUs in Minecraft is by now a long-standing tradition.

Enter CHUNGUS II. The Computational Humongous Unconventional Number and Graphics Unit by [Sammyuri] is the biggest and baddest Minecraft computer that we’ve ever seen. So big, in fact, that it was finally reasonable to think about porting a stripped-down version of Minecraft to the computer itself. Yes, that’s right, Minecraft running in Minecraft. (Video embedded below.) Writing the compiler and programming the game brought two more hackers to the party, [Uwerta] and [StackDoubleFlow], and quite honestly, we’re amazed that a team as small as three people pulled this off.

Anyway, once you’ve picked your jaw up off the floor, also check out [Sammyuri]’s video on just the CHUNGUS II computer itself. (Also embedded below.) Seeing the architecture is interesting, even if you don’t speak Redstone as fluently as our heroes here. We love that the assembler creates a block of ROM – out of Minecraft blocks – that you can then cut/paste into the game’s reality.

For a “simple” game about breaking blocks and punching trees, Minecraft has inspired hackers to make the game better both inside and outside of the real world. For instance, for the latest in performant open-source Minecraft servers, check out Folia. Maybe, one day, they’ll build CHUNGUS II in the real world. It could happen.

Thanks [dbcdr] for the tip!

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Minecraft Finally Gets Multi-Threaded Servers

April 3, 2023 by Matthew Carlson 33 Comments

Minecraft servers are famously single-threaded and those who host servers for large player bases often pay handsomely for a server that has gobs of memory and ripping fast single-core performance. Previous attempts to break Minecraft into separate threads haven’t ended successfully, but it seems like the folks over at [PaperMC] have finally cracked it with Folia.

Minecraft is one of (if not the most) hacked and modded games in history. Mods have been around since the early days, made possible by a dedicated group who painstakingly decompiled the Java bytecode and reverse-engineered it. Bukkit was a server mod back in the Alpha days that tried to support plugins and extend the default Minecraft. From Bukkit, Spitgot was forked. From Spitgot, Paper was forked, which focused on performance and gameplay mechanics. And now from Paper, Folia is a new fork focused on multi-threading.

A Minecraft world is split up into worlds (such as the nether or the overworld) and chunks. Chunks are 16x16xZ vertical columns of blocks. Folia breaks up sections of chunks into regions that can be ticked independently. Of course, moving to a multi-threaded model will cause existing plugins to fail. Very little was made thread-safe and the idea is that data cannot move easily across ticking regions. Regions tick in parallel, not synchronously.

Naturally, the people benefiting from Folia the most are those running servers that support hundreds of players. On a server with a vanilla-like configuration only around a hundred or so players can be online. Increasing single-core performance isn’t usually an option past this point. By moving to other cores, suddenly you can scale out significantly without restoring to complex proxying. Previous attempts have had multiple Minecraft servers and then synced players and entities between them. Of course, this can cause its own share of issues.

It’s simply incredible to us what the modding community continues to develop and create. It takes deep patience to reverse-engineer the system and rearchitect it from the outside. The Folia codebase is available on GitHub under a GNU GPL 3.0 license if you’d like to look through it.

Real Minecraft Furnace Generates Electricity From Coal

November 18, 2022 by Lewin Day 22 Comments

There’s a furnace in Minecraft that is used to power all kinds of things in the game. [Joel] of Joel Creates decided he wanted to build a real-world replica, and did exactly that.

The furnace consists of a 30 cm aluminium cube, inside which the coal is burned. Thermoelectric generators (TEGs) are then placed on the sides of the furnace to turn the heat into useful electricity. The TEGs are installed in a sandwich of aluminium plates designed to maximize heat transfer through the TEGs themselves. They’re fitted with heatsinks to help create the maximum thermal gradient for greater power output. The entire setup is housed in a larger aluminium cube that’s finished to look like the Minecraft furnace — achieved by using a CNC machine to draw on the aluminium with high-temperature Sharpies.

With the coal a-burning inside, the furnace was able to generate enough power to run its own cooling and exhaust fans. It even had a little power left over to charge a phone. Overall though, [Joel] hopes that with some improvement, it can one day power his Minecraft car replica up to its top speed of 25 mph.

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Learning By Playing

August 6, 2022 by Elliot Williams 5 Comments

Summer break has started over here, and my son went off to his first of a few day-camp-like activities last week. It was actually really cool – a workshop held by our local Fablab where they have the kids make a Minecraft building and then get to 3D-print it out. He loves playing and building in Minecraft, so we figured this would be right up his alley.

TinkerCAD model of a Lego Minecraft fox. Kiddo trifecta!

I had naively thought that it would work something like this: the kids build something in Minecraft, and then some software extracts the build and converts it into an STL file. Makes sense, because they already are more-or-less fluent in Minecraft modelling. And as I thought about that, it was a pretty clever idea.

But the truth was even sneakier. They warmed up by making something in Minecraft, then they opened up TinkerCAD, which was new to all of the kids, and built a 3D model there. Then they converted the TinkerCAD models into Minecraft, and played with what they had just built while the 3D printers hummed away.

The kids didn’t even flinch at having to learn a new 3D modelling tool, and the parallels to what they were already comfortable doing in Minecraft were obvious to them. My son came home and told me how much easier it was to do your 3D modelling in “this other Minecraft” – he meant TinkerCAD – because you don’t need to build everything out of single blocks. He thought he was playing games, but he’d secretly used his first CAD tool. Nice trick!

Then I look back and realize how much I must have learned about computers through playing as a kid. Heck, how much I still learn through playing. And of course I’m not alone – that’s one of the things that shines through in a large number of the projects we feature. Hack on and have fun!