The Impossible Library
ModHelps mod makers run their mods across different game versions.
Why gradeB
How grades workStrengths
Points lost
- No release in 11 months−8 points
- Releases in only 4 of the last 24 months−3 points
- Some modpacks removed it−1 point
All 11 criteria
Maintenance
8 points lost19 / 27Last releaseHow long ago the newest file came out, or an existing file was marked as working on a new Minecraft version.11 months ago (22 Nov 2025). 104 modpacks released in the last 6 months still include it, so it keeps 60% of these points. 7 / 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.1.21.1 on Forge, Fabric, NeoForge and Quilt. 15% or more of the popular mods updated in the last 6 months also have files for 1.21.1. Latest Minecraft: 26.3. 9 / 9Regular releasesIn how many of the last 24 months a new file came out. Full points at 8 months.Releases in 4 of the last 24 months 3 / 6Stability
1 point lost21 / 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.41 of the 331 modpacks with two or more versions removed it in a later one (12%) See the 41 modpacks9 / 10Quick fixesHow often a release needed a quick fix: a new release within 3 days to fix a problem in it.No quick fix in 2 years 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 · TheComputerizer/The-Impossible-Library 7 / 7Place to report problemsWhether the project page links to a place where players can report problems: an issue tracker.GitHub issues · TheComputerizer/The-Impossible-Library 3 / 3Popularity
Full points4 / 4DownloadsDownloads on Modrinth and CurseForge. Full points from 5 million.3,663,863 4 / 4Track record
3 points lost5 / 8AgeHow long the project has existed. It counts less when no new file came out recently.4.0 years, 70 releases 5 / 8Security
PassedFile checksThis check adds no points. It can only take points away.Our checks found nothing harmful in both latest files for recent Minecraft versions. See Security
59.1 of the 71 points that apply = 83 out of 100. The points above are rounded to whole numbers.
About
The Impossible Library is a developer-focused Minecraft library and API, originally created to help mod authors implement tasks that would otherwise be difficult, tedious, or require external Java libraries, and it can also load and run mods across multiple game versions and mod loaders. Its utilities include easier file creation and manipulation, generic on-screen image rendering, global NBT data storage and retrieval, radial GUI support with helper methods, and asynchronous tick events scheduled in milliseconds.
Written from Modrinth and the GitHub README . How we write it
In-game changes
Changes the game's code in 5 areas, as a library other mods build on: Server and world logicChanges 3 game code files in this area: the world, commands, scoreboards, saved data and game rules., SoundChanges 2 game code files in this area: playing sounds, music and the sound engine., Rendering and graphicsChanges 1 game code file in this area: drawing mobs, items, particles and textures on screen., Mobs and their behaviorChanges 1 game code file in this area: mobs, animals, villagers, projectiles and how they move and act. and Other game codeChanges 2 game code files in this area: game code that is not in one of the areas above..
Adds no new blocks, items or other content.
Keeps all of vanilla Minecraft's textures, models and sounds.
Often used with it
See all 29Details
- Creator
- The_Computerizer
- License
- GNU General Public License v3.0 or later
- Downloads
- 3.7M
- Created
- 16 Aug 2022
- Official pages
- Modrinth , CurseForge
- Links
- Source code , Issues , Wiki , Discord
Security
No harmful code found
We checked its files and read their code, without running it.
What it can do on your computer
- Can download and run new code
- The same part of the code can download data and run it as code. Auto-updaters do this, and so does malware. Only in its files for Fabric 1.12.2 to 1.21.1.Not a Warning: we read its code and found no code downloaded over http or run without a check.
- Connects to the internet
- It has code that can go online, for example to check for updates, load skins or send crash reports. No web address is written in its code. See Privacy
- Creates settings files
- The mod keeps its settings in the config folder of your game, where you can change or delete them. Only in its files for Fabric 1.12.2 to 1.21.1.
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. The answer above is about the 2 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.Folders outside the game, other programs, updating itself, the webcam or microphone, an AI service.
Privacy
We found nothing it sends about you
We read its code without running it: it contacts 1 web address while you play.
Like any connection, each address it contacts sees your IP address.
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 both files, for recent Minecraft versions. See each file in Releases
- Address built while the game runsThe code builds this address while the game runs: it is not written in the file.Purpose not known.
- 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
No sign that AI was used to make it
We looked for AI tools in its texts, files, images and code history and found none.
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.No AI content or AI features declared.
- Code historyThe public code on GitHub: who made each change, credit lines such as "Co-authored-by", and its files.Nothing found
- Description and changelogsThe description, project page and newest changelogs: sentences saying an AI tool was used, and text pasted from an AI chat.Nothing found16 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 found4 images 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 file3,000 code files read
Compatibility
See all 70 filesPoint at or tap a version to see its loaders.
Related projects
Projects that need The Impossible Library to work.
Modpacks using this project
Find modpacks with it| Oct 2024 | 22 |
|---|---|
| Nov 2024 | 25 |
| Dec 2024 | 19 |
| Jan 2025 | 20 |
| Feb 2025 | 26 |
| Mar 2025 | 17 |
| Apr 2025 | 17 |
| May 2025 | 23 |
| Jun 2025 | 16 |
| Jul 2025 | 18 |
| Aug 2025 | 20 |
| Sep 2025 | 15 |
| Oct 2025 | 21 |
| Nov 2025 | 17 |
| Dec 2025 | 24 |
| Jan 2026 | 26 |
| Feb 2026 | 21 |
| Mar 2026 | 29 |
| Apr 2026 | 23 |
| May 2026 | 22 |
| Jun 2026 | 25 |
| Jul 2026 | 33 |
| Aug 2026 | 31 |
| Sep 2026 | 25 |
421 modpacks include The Impossible Library in at least one of their versions. Here are the 30 most downloaded.
DawnCraft - Echoes of Legends10.5M downloadslast version with it 31 Mar 2023
Cursed Walking - A Modern Zombie Apocalypse8.7M downloadslast version with it 8 Aug 2026
Rebirth of the Night (RotN)1.3M downloadslast version with it 2 Feb 2026
Legendary Edition1.2M downloadslast version with it 6 Jan 2025
ArdaCraft1.1M downloadslast version with it 20 Apr 2026
Chocolate Edition Minecraft1.1M downloadslast version with it 4 May 2026
ZOMBIEMANIA - A Modern Zombie Apocalypse1M downloadslast version with it 13 Oct 2026
Biohazard: Project Genesis - The Ultimate Apocalypse965K downloadslast version with it 20 Aug 2026
Zombies, Cars and Tech !254K downloadslast version with it 25 Apr 2023
Versatile254K downloadslast version with it 1 Sep 2023Often in the same modpacks
Mods that modpacks often add together with The Impossible Library. Share: how many of the modpacks with The Impossible Library also have that mod.
AttributeFixAModin 47% of the modpacks with The Impossible Library
sparkAModin 43% of the modpacks with The Impossible Library
Serene SeasonsAModin 42% of the modpacks with The Impossible Library
AI Improvements: Performance TuningAModin 38% of the modpacks with The Impossible Library
YUNG's Better Nether FortressesAModin 38% of the modpacks with The Impossible Library
YUNG's Better Ocean MonumentsAModin 37% of the modpacks with The Impossible Library
Sodium Dynamic LightsCModin 36% of the modpacks with The Impossible Library
Legendary TooltipsAModin 36% of the modpacks with The Impossible Library
MmmMmmMmmMmmAModin 36% of the modpacks with The Impossible Library
BlueprintAModin 35% of the modpacks with The Impossible LibraryLatest 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.