Worlds
ModRun multiple worlds on one server and travel between them.
Why gradeA
How grades workStrengths
Points lost
- Under 5 million downloads−1 point
All 11 criteria
Maintenance
Full points27 / 27Last releaseHow long ago the newest file came out, or an existing file was marked as working on a new Minecraft version.3 weeks ago (7 Oct 2026) 12 / 12Supports popular versionsWhether the project has a file for a Minecraft version that 15% or more of the popular mods updated in the last 6 months also support. A version many modpacks use, like 1.20.1 or 1.21.1, also counts after a release in the last 12 months.26.3 on Fabric and Quilt (latest) 9 / 9Regular releasesIn how many of the last 24 months a new file came out. Full points at 8 months.Releases in 10 of the last 24 months 6 / 6Stability
Full points22 / 22Removed from modpacksHow many modpacks removed it in a later version of the pack. We can only see this in modpacks with two or more versions. A pack that swaps it for another edition of the same project, or that is rebuilt from scratch, does not count.None of the 3 modpacks with two or more versions removed it 10 / 10Quick fixesHow often a release needed a quick fix: a new release within 3 days to fix a problem in it.Not counted: it puts out releases very often, so quick fixes are normal for it 7 / 7Known conflictsHow many projects say they do not work with it, compared with how widely it is used. Packs, small projects, forks, ports, add-ons, alternatives and old versions do not count.None 5 / 5Transparency
Full points10 / 10Source codeWhether the project page links to its source code, so anyone can read what it does.GitHub · Wroud/mc-worlds 7 / 7Place to report problemsWhether the project page links to a place where players can report problems: an issue tracker.GitHub issues · Wroud/mc-worlds 3 / 3Popularity
1 point lost3 / 4DownloadsDownloads on Modrinth and CurseForge. Full points from 5 million.25,786 3 / 4Track record
Full points8 / 8AgeHow long the project has existed. It counts less when no new file came out recently.14 months, 60 releases 8 / 8Security
PassedFile checksThis check adds no points. It can only take points away.Our checks found nothing harmful in all 10 latest files for recent Minecraft versions. See Security
69.6 of the 71 points that apply = 98 out of 100. The points above are rounded to whole numbers.
About
Worlds lets a Fabric server host many separate worlds, which operators can create, list, delete, configure and travel between using in-game commands. Worlds can be created as Overworlds or from presets such as flat and amplified, or from dimension types such as the Nether and End; data-pack world presets and dimension types are also supported. Each world can keep its own time, weather and game rules, including settings for inventory, PvP, mob spawning and daylight, while unchanged rules continue to follow the server. Vanilla features such as portals, maps, ender pearls and the End dragon fight work in every created world, so each can retain familiar Minecraft gameplay. Worlds load when a player enters and unload a minute after the last player leaves, allowing a server to keep many worlds without keeping every one active. The mod also provides an API for other mods to register world types, with Worlds handling their creation, loading, saving and teleportation.
Written from Modrinth , CurseForge and the GitHub README . How we write it
In-game changes
Changes the game's code in 10 areas, as a library other mods build on: Server and world logicChanges 10 game code files in this area: the world, commands, scoreboards, saved data and game rules., Blocks and fluidsChanges 5 game code files in this area: how blocks, fluids and redstone work., Mobs and their behaviorChanges 4 game code files in this area: mobs, animals, villagers, projectiles and how they move and act., Networking and multiplayerChanges 3 game code files in this area: connections, the server list and what is sent between your game and a server., Game data and resourcesChanges 3 game code files in this area: recipes, tags, advancements, language files and other game data., PlayerChanges 2 game code files in this area: your character: movement, abilities, hunger and controls., World generationChanges 1 game code file in this area: terrain, biomes and structures made when new land is created., Rendering and graphicsChanges 1 game code file in this area: drawing mobs, items, particles and textures on screen., User interfaceChanges 1 game code file in this area: menus, screens, tooltips, the chat window and the in-game overlay. and Game coreChanges 1 game code file in this area: the main loop, lighting and other code the whole game uses..
Libraries packed inside it change 7 more game code files: message-api and Player Data API.
Adds no new blocks, items or other content.
Keeps all of vanilla Minecraft's textures, models and sounds.
Details
- Creator
- Wroud
- License
- MIT License
- Downloads
- 26K
- Created
- 3 Sep 2025
- Official pages
- Modrinth , CurseForge
- Links
- Source code , Issues
Security
No harmful code found
We checked its files and read their code, without running it.
Why we show this: a mod runs on your computer like any program, so harmful code in it can take your accounts or files. Our checks look for known signs of harm. They cannot prove that a file is harmless. In the grade: malware means no grade, and a Warning in a latest file for a recent Minecraft version lowers it.
How we checked
- FilesWe download the files from Modrinth or CurseForge and look at what is inside them and what their code can do, without running them. Fixed rules tell what is harmful.10 latest files: the newest file for each Minecraft version and loader. All 10 are for recent versions. Recent versions: those released in the last 2 years, plus 1.20.1 and 1.21.1, among the most played in modpacks. See each file in Releases
- Their codeWe turn the code of the files back into readable code and follow what it does, without running it. This shows what it downloads, what it sends and where your login goes.Read without running it
- Author on ModrinthThe disclosure form on Modrinth, where the author declares that the project reads or edits things on your system outside the game. Since 13 Aug 2026, Modrinth's rules require it when this applies.Nothing declared about your system outside the game.
- Looked for, not foundWe looked for these in the file and did not find them.The internet, folders outside the game, other programs, updating itself, the webcam or microphone, an AI service.
Privacy
We found nothing it sends
We read its code without running it: it contacts no web address while you play.
Why we show this: a mod can send things about you over the internet, like your player name or your login. Contacting an address to check for updates or download files sends nothing about you. Not in the grade: sending data can be normal for what a mod does.
How we checked
- Files readWe read the code without running it. We list each web address the code contacts while you play, and what it sends. Code that is never used is left out.The code of all 10 files, for recent Minecraft versions. See each file in Releases
- Author on ModrinthThe disclosure form on Modrinth, where the author declares crash reports, usage data and advertisements. Since 13 Aug 2026, Modrinth's rules require it when a project collects data on its users or shows advertisements.Nothing declared about crash reports, usage data or advertisements.
AI
AI was used for its code and text
The author declares AI code and text on Modrinth.
We looked for AI tools in its texts, files and images and found none.
We have not read its code history yet.
No sign of AI in the game
We found no AI service, AI library or AI model file in its code.
Why we show this: some players and servers avoid projects made with AI, and AI in the game can send what you write to an online service. Not in the grade: using AI does not tell whether a project works well or is kept up to date.
How we checked
- Author on ModrinthThe disclosure form on Modrinth. Since 13 Aug 2026, Modrinth's rules require it when a substantial part of the code is AI output, when an asset is mainly AI output, or when the project or its page relies on generative AI.Declares AI code, text. No AI features declared.
- Code historyThe public code on GitHub: who made each change, credit lines such as "Co-authored-by", and its files.Not read yet
- Description and changelogsThe description, project page and newest changelogs: sentences saying an AI tool was used, and text pasted from an AI chat.Nothing found15 of 40 changelogs read
- Its filesFiles that AI coding tools leave behind (like AGENTS.md), and the texts inside the files you download.Nothing found
- Images in its filesHidden data in the images of the files you download, where AI image tools write their name and settings.Nothing found1 image read
- Code of the modThe code and files of the mod, read without running it: addresses of AI services, AI libraries, AI model files and a place for your own AI key.No AI service, AI library or AI model file100 code files read
Compatibility
See all 60 filesPoint at or tap a version to see its loaders.
Related projects
Projects that need Worlds to work.
Modpacks using this project
Find modpacks with itModpacks that include Worlds in at least one of their versions, most downloaded first.
Latest files
The newest file for each Minecraft version and loader. The files for recent versions come first. Recent versions: those released in the last 2 years, plus 1.20.1 and 1.21.1, among the most played in modpacks.