Overworld Expansion
Data packCustom Terrain is a pure worldgen, server-side datapack that combines refined surface terrain with expanded cave biomes into one seamless world generation pack, with all custom gameplay systems removed.
Why gradeC
How grades workStrengths
Points lost
- First release only 2 months ago−7 points
- Under 50,000 downloads−2 points
All 10 criteria
Maintenance
Full points21 / 21Last releaseHow long ago the newest file came out, or an existing file was marked as working on a new Minecraft version.7 weeks ago (7 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.Newest supported: 26.2. 15% or more of the popular mods updated in the last 6 months also have files for 26.2. Latest Minecraft: 26.3. 9 / 9Regular releasesIn how many of the last 24 months a new file came out. Full points at 3 months.Does not apply. The project is under 6 months old.Stability
Full points5 / 5Removed 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.Not measured yet.Quick 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 points3 / 3Source codeWhether the project page links to its source code, so anyone can read what it does.Does not apply. A data pack's files can be read in the download.Place to report problemsWhether the project page links to a place where players can report problems: an issue tracker or a Discord server.Discord 3 / 3Popularity
2 points lost2 / 4DownloadsDownloads on Modrinth and CurseForge. Full points from 50,000.164 2 / 4Track record
7 points lost1 / 8AgeHow long the project has existed. It counts less when no new file came out recently.2 months, 3 releases 1 / 8
32.1 of the 41 points that apply = 78 out of 100. The points above are rounded to whole numbers.
Images
In-game changes
Runs 1,318 function files: 1 every game tick and 2 when the pack loads. Its commands can place or replace blocks and remove entities, items or data.
Changes world generation: terrain shape, 141 biomes, caves, decorations such as trees and ores, 63 structures, 1 dimension and world types.
Adds 102 enchantments, 2 recipes, 162 advancements, 491 loot tables, 158 tags, 53 predicates, 16 item modifiers and 112 more files in other folders.
Replaces 91 of vanilla Minecraft's world generation files, 10 loot tables and 9 other data files.
Details
- Creator
- Fabric Server Essentials
- License
- MIT License
- Downloads
- 172
- Created
- 27 Aug 2026
- Official page
- Modrinth
- Links
- Discord
Security
No harmful code found
We checked what is inside its files, without opening them in the game.
Why we show this: a data pack cannot run programs, but its file can hide one. Our checks look for known signs of harm. They cannot prove that a file is harmless. In the grade: malware means no grade.
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.1 latest file, for a recent version. 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
- 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.
Privacy
Sends nothing
A data pack has no code that can connect to the internet, so it cannot send anything about you.
AI
No sign that AI was used to make it
We looked for AI tools in its texts, files and images and found none.
Why we show this: some players and servers avoid projects made with AI. 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 declared.
- Description and changelogsThe description, project page and newest changelogs: sentences saying an AI tool was used, and text pasted from an AI chat.Nothing found3 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
Compatibility
See all 3 filesPoint at or tap a version to see it.
Modpacks using this project
No known modpack uses it.
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.