Otyacraft Engine
ModFelnull integration mod library.
Why gradeC
How grades workStrengths
Points lost
- No release in 3.3 years−16 points
All 11 criteria
Maintenance
12 points lost15 / 27Last releaseHow long ago the newest file came out, or an existing file was marked as working on a new Minecraft version.3.3 years ago (1 Jul 2023). 63 modpacks released in the last 6 months still include it, so it keeps 53% of these points. 6 / 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.1.20.1 on Forge and Fabric, 1.19.4 on Quilt. 77% of the 516 popular Forge mods updated in the last 6 months also have files for 1.20.1. Latest Minecraft: 26.3. 9 / 9Regular releasesIn how many of the last 24 months a new file came out. Full points at 8 months.No release in the last 24 months 0 / 6Stability
Full points15 / 15Removed 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.38 of the 375 modpacks with two or more versions removed it in a later one (10%) 10 / 10Quick fixesHow often a release needed a quick fix: a new release within 3 days to fix a problem in it.Not measured yet.Known 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 · TeamFelnull/OtyacraftEngine 7 / 7Place to report problemsWhether the project page links to a place where players can report problems: an issue tracker.GitHub issues · TeamFelnull/OtyacraftEngine 3 / 3Popularity
Full points4 / 4DownloadsDownloads on Modrinth and CurseForge. Full points from 5 million.2,362,605 4 / 4Track record
4 points lost4 / 8AgeHow long the project has existed. It counts less when no new file came out recently.6.2 years, 80 releases 4 / 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
48.5 of the 64 points that apply = 76 out of 100. The points above are rounded to whole numbers.
About
Otyacraft Engine is a library mod developed for Team FelNull, providing shared functionality for mod development and integration. It is used by Iam Music Player, and its bundled Java libraries include an animated GIF library and the Felnull Java library.
Written from Modrinth , CurseForge and the GitHub README . How we write it
In-game changes
Changes the game's code in 7 areas, as a library other mods build on: Rendering and graphicsChanges 5 game code files in this area: drawing mobs, items, particles and textures on screen., Game coreChanges 3 game code files in this area: the main loop, lighting and other code the whole game uses., Server and world logicChanges 2 game code files in this area: the world, commands, scoreboards, saved data and game rules., World renderingChanges 2 game code files in this area: drawing the terrain, sky, clouds and weather., Game data and resourcesChanges 2 game code files in this area: recipes, tags, advancements, language files and other game data., Mobs and their behaviorChanges 2 game code files in this area: mobs, animals, villagers, projectiles and how they move and act. and Networking and multiplayerChanges 1 game code file in this area: connections, the server list and what is sent between your game and a server..
Adds 1 key binding: Test.
Counted from the names and data files in the mod, so the list may not be complete.
Keeps all of vanilla Minecraft's textures, models and sounds.
Often used with it
See all 29Details
- Creators
- FelNull (morimori0317, mg8853 and nin8995)
- License
- GNU Lesser General Public License v3.0 only
- Downloads
- 2.4M
- Created
- 8 Aug 2020
- Official pages
- Modrinth , CurseForge
- Links
- Source code , Issues , Discord
Security
No harmful code found
We checked its files and read their code, without running it.
What it can do on your computer
- Connects to the internet
- It has code that can go online, for example to check for updates, load skins or send crash reports. No address written in the code is contacted by the code that runs. See Privacy
- Creates settings files
- The mod keeps its settings in the config folder of your game, where you can change or delete them.
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.19 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
Sends system details
Sent to an address built while the game runs.
We found this in its code, read without running it.
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.System details (operating system, Java version)
- 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 so far that AI was used to make it
We looked for AI tools in its description, files, images and code history and found none.
We have not read its changelogs 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.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 found in the descriptionChangelogs not read yet
- 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 found10 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 file386 code files read
Compatibility
See all 80 filesPoint at or tap a version to see its loaders.
Related projects
Projects that need Otyacraft Engine to work.
Modpacks using this project
Find modpacks with it| Oct 2024 | 87 |
|---|---|
| Nov 2024 | 90 |
| Dec 2024 | 107 |
| Jan 2025 | 84 |
| Feb 2025 | 96 |
| Mar 2025 | 100 |
| Apr 2025 | 71 |
| May 2025 | 70 |
| Jun 2025 | 60 |
| Jul 2025 | 60 |
| Aug 2025 | 62 |
| Sep 2025 | 58 |
| Oct 2025 | 52 |
| Nov 2025 | 41 |
| Dec 2025 | 45 |
| Jan 2026 | 52 |
| Feb 2026 | 28 |
| Mar 2026 | 38 |
| Apr 2026 | 29 |
| May 2026 | 24 |
| Jun 2026 | 17 |
| Jul 2026 | 17 |
| Aug 2026 | 13 |
| Sep 2026 | 10 |
Fewer modpacks put it in their new versions than a year ago: 18 a month now, 64 a year agoThe average of the last 6 months, compared with the same 6 months a year before. We say it only when the change is large..
1,094 modpacks include Otyacraft Engine in at least one of their versions. Here are the 30 most downloaded.
Biohazard: Project Genesis - The Ultimate Apocalypse965K downloadslast version with it 13 Sep 2026
Create: Perfect World 2359K downloadslast version with it 28 Oct 2024
Ages Of War (Nukes,Bombs and Guns!!)350K downloadslast version with it 6 Jan 2026
A Shattered Prophecy (The Broken Script)264K downloadslast version with it 10 Mar 2025
Origin - SMP234K downloadslast version with it 14 May 2022
The Pioneers218K downloadslast version with it 8 Apr 2026
Wold's Vaults - Vault Hunters Expansion115K downloadslast version with it 9 Oct 2026
Bun Souls89K downloadslast version with it 26 Mar 2026
Mystic's Monstrosity84K downloadslast version with it 15 Nov 2025
Create - Forge Frontier68K downloadslast version with it 21 Oct 2025Often in the same modpacks
Mods that modpacks often add together with Otyacraft Engine. Share: how many of the modpacks with Otyacraft Engine also have that mod.
Create: Steam 'n' RailsAModin 57% of the modpacks with Otyacraft Engine
Create DecoBModin 55% of the modpacks with Otyacraft Engine
Create: Enchantment IndustryAModin 54% of the modpacks with Otyacraft Engine
ChippedCModin 54% of the modpacks with Otyacraft Engine
Create Slice & DiceAModin 53% of the modpacks with Otyacraft Engine
Server Performance - Smooth Chunk SaveAModin 48% of the modpacks with Otyacraft Engine
ConnectivityAModin 48% of the modpacks with Otyacraft Engine
AttributeFixAModin 48% of the modpacks with Otyacraft Engine
Macaw's Lights and LampsBModin 47% of the modpacks with Otyacraft Engine
Macaw's FurnitureBModin 46% of the modpacks with Otyacraft EngineLatest 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.