Lavaflow
ModA reworked Nether with lava rivers, waterfalls, valleys, and new biomes.
Why gradeC
How grades workStrengths
Points lost
- No release in 10 months−17 points
- Releases in only 5 of the last 24 months−2 points
- Under 5 million downloads−1 point
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.10 months ago (12 Dec 2025) 2 / 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.1.21.11 on Fabric, Forge and NeoForge. 15% or more of the popular mods updated in the last 6 months also have files for 1.21.11. 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 5 of the last 24 months 4 / 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.1 of the 5 modpacks with two or more versions removed it in a later one (20%) 10 / 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.1 known conflict, but it does not count in the grade See the known conflict5 / 5Transparency
Full points10 / 10Source codeWhether the project page links to its source code, so anyone can read what it does.GitHub · jacobsjo/lavaflow 7 / 7Place to report problemsWhether the project page links to a place where players can report problems: an issue tracker.GitHub issues · jacobsjo/lavaflow 3 / 3Popularity
1 point lost3 / 4DownloadsDownloads on Modrinth and CurseForge. Full points from 5 million.15,475 3 / 4Track record
7 points lost1 / 8AgeHow long the project has existed. It counts less when no new file came out recently.22 months, 24 releases 1 / 8Security
PassedFile checksThis check adds no points. It can only take points away.Our checks found nothing harmful in all 4 latest files for recent Minecraft versions. See Security
51 of the 71 points that apply = 72 out of 100.
Images
About
Lavaflow overhauls the Nether with deliberately shaped, three-dimensional terrain, placing biomes to fit the landscape rather than scattering them randomly. High and low lava rivers run through the landscape, with large lavafalls leading into canyons and valleys and onward to broad lava oceans divided by pillars and edged by gravel beaches. Narrow layers above the valleys and oceans offer routes across the terrain, while smaller caves appear beneath higher ground. The biome additions and variations include the Ghost Forest among soul-sand valleys and unusually tall, old-growth Warped Forests alongside Crimson Forests. Vanilla Nether structures remain largely unchanged, but their placement is arranged to complement the terrain, including distinct placement for each Bastion Remnant type; Fortresses can be found above valleys and near lava oceans. Smooth Basalt replaces Netherrack as the underlying terrain block, creating distinctive columns and walls, while Netherrack still commonly covers floors and ceilings and occurs in underground blobs. This geological change also affects mining: Gold Ore occurs in both Smooth Basalt and Netherrack, Quartz Ore only in Netherrack, and Ancient Debris is harder to mine but more common and distributed differently.
Written from Modrinth . How we write it
In-game changes
Does not change the game's code directly.
Adds 11 biomes, 2 structures and 2 loot tables.
Counted from the names and data files in the mod, so the list may not be complete.
Replaces 10 of vanilla Minecraft's world generation files, 3 tags, 3 structures and 2 advancements.
Details
- Creator
- jacobsjo
- Downloads
- 15K
- Created
- 13 Dec 2024
- 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.4 latest files: the newest file for each Minecraft version and loader. All 4 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 4 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 so far that AI was used to make it
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.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.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 found20 of 32 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 file
Compatibility
See all 24 filesPoint at or tap a version to see its loaders.
Known conflicts
These projects do not work together with Lavaflow: their authors or Lavaflow's author say so. If you install both, the game can crash or some features can stop working. Some of them do the same job as Lavaflow, so you only need one.
Modpacks using this project
Find modpacks with itModpacks that include Lavaflow in at least one of their versions, most downloaded first.
Project 4J9.5K downloadslast version with it 6 Jun 2026
A Shared Experience4.7K downloadslast version with it 12 May 2025
DroiiidPack 1.21.6861 downloadslast version with it 10 Jun 2025
Halfway352 downloadslast version with it 25 Apr 2026
Version 2.0309 downloadslast version with it 8 Apr 2026
MC Fixed+265 downloadslast version with it 1 May 2025Latest 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.