Flerovium
ModHelps your game run faster while keeping graphics quality intact.
Why gradeA
How grades workStrengths
Points lost
- No public issue tracker−3 points
- Releases replaced within 3 days to fix a problem−2 points
- Some modpacks removed it−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.4 weeks ago (26 Sep 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.1.21.1 on NeoForge, 1.20.1 on Forge. 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 17 of the last 24 months 6 / 6Stability
3 points lost19 / 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.49 of the 378 modpacks with two or more versions removed it in a later one (13%) See the 49 modpacks9 / 10Quick fixesHow often a release needed a quick fix: a new release within 3 days to fix a problem in it.10 of its 58 releases in 2 years needed a quick fix (17%) See the 10 releases5 / 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
3 points lost7 / 10Source codeWhether the project page links to its source code, so anyone can read what it does.GitHub · MoePus/Flerovium 7 / 7Place to report problemsWhether the project page links to a place where players can report problems: an issue tracker.No link to report problems 0 / 3Popularity
Full points4 / 4DownloadsDownloads on Modrinth and CurseForge. Full points from 5 million.29,903,985 4 / 4Track record
Full points8 / 8AgeHow long the project has existed. It counts less when no new file came out recently.23 months, 60 releases 8 / 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
65.3 of the 71 points that apply = 92 out of 100. The points above are rounded to whole numbers.
About
Flerovium is a client-side performance mod that speeds up rendering while aiming to preserve graphics quality. It improves item rendering with backface culling, fast math, and level of detail (LOD), and the project reports faster rendering of large item-entity groups and Create item displays. Particle rendering uses fast math, fast culling, and cached lighting; the project reports a speedup when rendering 16,384 Cherry particles. Entity rendering uses fast math and backface culling, with reported performance gains when rendering large groups of skeletons. Flerovium also affects Create's Mechanical Belt and Depot rendering.
Written from Modrinth and CurseForge . How we write it
In-game changes
Changes the game's code in 4 areas: Rendering and graphicsChanges 7 game code files in this area: drawing mobs, items, particles and textures on screen., World renderingChanges 3 game code files in this area: drawing the terrain, sky, clouds and weather., SoundChanges 1 game code file in this area: playing sounds, music and the sound engine. and Server and world logicChanges 1 game code file in this area: the world, commands, scoreboards, saved data and game rules..
Libraries packed inside it change 10 more game code files: parts of 
Fabric API.
Adds no new blocks, items or other content.
Keeps all of vanilla Minecraft's textures, models and sounds.
Often used with it
See all 30Details
- Creator
- MoePus
- License
- GNU Lesser General Public License v3.0 only
- Downloads
- 29.9M
- Created
- 17 Nov 2024
- Official pages
- Modrinth , CurseForge
- Links
- Source code
Security
No harmful code found
We checked its files and read their code, without running it.
What it can do on your computer
- Creates settings files
- The mod keeps its settings in the config folder of your game, where you can change or delete them. 1 file in your config folder.
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.2 latest files: the newest file for each Minecraft version and loader. Both 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 both 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
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 found40 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 found
- 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 file37 code files read
Compatibility
See all 60 filesPoint at or tap a version to see its loaders.
Modpacks using this project
Find modpacks with it| Oct 2024 | 0 |
|---|---|
| Nov 2024 | 7 |
| Dec 2024 | 21 |
| Jan 2025 | 44 |
| Feb 2025 | 57 |
| Mar 2025 | 76 |
| Apr 2025 | 83 |
| May 2025 | 136 |
| Jun 2025 | 214 |
| Jul 2025 | 229 |
| Aug 2025 | 197 |
| Sep 2025 | 194 |
| Oct 2025 | 237 |
| Nov 2025 | 231 |
| Dec 2025 | 276 |
| Jan 2026 | 269 |
| Feb 2026 | 283 |
| Mar 2026 | 302 |
| Apr 2026 | 345 |
| May 2026 | 410 |
| Jun 2026 | 436 |
| Jul 2026 | 482 |
| Aug 2026 | 471 |
| Sep 2026 | 421 |
More modpacks put it in their new versions than a year ago: 428 a month now, 176 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..
2,867 modpacks include Flerovium in at least one of their versions. Here are the 30 most downloaded.
DeceasedCraft - Urban Zombie Apocalypse9.8M downloadslast version with it 17 Jul 2026
Cave Horror Project 18.2M downloadslast version with it 1 Oct 2026
BattleArmory TACZ3.8M downloadslast version with it 20 Jun 2026
Beyond Depth3.4M downloadslast version with it 18 Oct 2026
NightfallCraft - The Casket of Reveries2.3M downloadslast version with it 17 Aug 2026
Lucky World Invasion2.2M downloadslast version with it 26 Jul 2025
MC Eternal 21.9M downloadslast version with it 16 Sep 2026
Society: Sunlit Valley1.6M downloadslast version with it 7 Oct 2026
Create+1.5M downloadslast version with it 15 Jun 2026
Linggango - [V6.5 IS OUT]1.3M downloadslast version with it 24 Oct 2026Often in the same modpacks
Mods that modpacks often add together with Flerovium. Share: how many of the modpacks with Flerovium also have that mod.
BadOptimizationsAModin 67% of the modpacks with Flerovium
AllTheLeaks (Memory Leak Fix)AModin 64% of the modpacks with Flerovium
sparkAModin 57% of the modpacks with Flerovium
Sodium Dynamic LightsCModin 55% of the modpacks with Flerovium
AmendmentsAModin 53% of the modpacks with Flerovium
AttributeFixAModin 52% of the modpacks with Flerovium
FastSuiteAModin 51% of the modpacks with Flerovium
Packet FixerAModin 49% of the modpacks with Flerovium
fix GPU memory leakAModin 48% of the modpacks with Flerovium
Sinytra ConnectorAModin 48% of the modpacks with FleroviumLatest 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.
60 releases
Quick fixes
In the last 2 years, 10 releases needed a quick fix: a new release within 3 days to fix a problem. This lowers the grade by 2 points.
See them, newest first
Quick fixesReleases followed within 3 days by a new release that fixes a problem in them.10
- flerovium-forge-1.20.1-1.2.13-all.jarfix normal order issue introduced from 1.2.11
- flerovium-forge-1.20.1-1.2.12-all.jarfix item normal issue introduced in 1.2.11 (#36) fix…
- flerovium-neoforge-1.21.1-1.0.2-all.jarFix particle lights
- flerovium-forge-1.20.1-1.1.4-all.jarFix crash with Ponder
- flerovium-forge-1.20.1-1.1.1-all.jarfix item culling in Inventory player view fix some…
- flerovium-forge-1.20.1-1.1.0-all.jarRefactoring for better compatibility fix visual bugs with EnderIO, Mek and so on.
- flerovium-forge-1.20.1-1.0.7.jarFix animated textures not working Added work around for…
- flerovium-forge-1.20.1-1.0.2.jarfix normal fix a crash
- flerovium-forge-1.20.1-1.0.3.jarFixed compatibility issues with lithiium (again)
- flerovium-forge-1.20.1-1.0.1.jarFixed compatibility issues with lithiium Added backface culling…