# OneBlock 4.0.0
*This file is for **Forge 26.1**.*
**Make the OneBlock your own.** Everything the block can spawn — blocks, items and mobs —
is now yours to browse, tweak and rebuild. Existing worlds and break counts are safe.
- **Dictionaries**: browse every block, item, hostile and friendly mob the block can
spawn — including modded ones — with live spawn chances, and toggle any entry off.
- **Custom drop tables**: replace the built-in progression with your own weighted lists.
- **Tiers & break thresholds**: give any entry a `tier` or a `breaks` value so it only
starts spawning after that many broken blocks — build your own progression.
- **One config file**: everything lives in `config/oneblock.json`. Use **Export For
Website** in the admin menu, edit the file visually at
[codx.io/tools/one-block](https://www.codx.io/tools/one-block), drop it back in and
hit **Reload From File**.
- Admin actions and dictionary edits are operator-only.
- Fixes: modded blocks no longer spawn waterlogged (no more surprise water sources);
invisible modded multiblock parts can no longer become the OneBlock; silenced a
harmless `Display entity` log error on some versions.
**CodxLib is required** — install the build matching your Minecraft version and loader.
On Fabric it must be **1.3.4 or newer**.
Developer information
Projects on Modrinth are automatically available through a Maven repository for use with JVM build tools such as Gradle.
maven { name = "Modrinth"; url = "https://api.modrinth.com/maven" }
