Adrenaline
by FlyInMyEye
Adrenaline speeds up world generation on Forge servers by running chunk generation in parallel across configurable worker threads.
What it does
Adrenaline targets the cost of creating new terrain. Instead of leaving most of Minecraft's generation steps as they are, it replaces some of the slower ones with faster code and spreads chunk generation over several threads. Worldgen toggles let a server owner choose which terrain, surface, noise, aquifer, beardifier and ore vein steps are optimized.
The mod is server-side only, so players join without installing it, and it is published for Forge alone. Its files cover 1.20.1 – 1.20.6, with 0.1.2.4 for 1.20.6 as the latest release. It requires DataFly Lib and Fly's config lib, and it is released under the MIT License as open source. Built jars are produced from the build/libs folder.
Key features
Parallel chunk generation
Chunks are generated in parallel, and the number of worker threads can be set in the configuration.
Worldgen optimization toggles
Separate switches cover terrain, fill, surface noise, aquifers, beardifier and ore veins, so each step can be turned on or off.
Feature safety radius
A safety radius controls how features are placed, keeping placement safer when modded worldgen is installed.
Statistics overlay and logging
A worldgen statistics overlay and debug logging are available in development builds for inspecting generation work.
Gallery
Compatibility
Latest build for each game version and loader.
Only full game releases are shown. This mod publishes no snapshot builds.
Requirements
Dependencies declared by the latest file for each loader.
Required 2
Use cases
Large pre-generated worlds
Servers that generate large areas of terrain can use the parallel chunk setting to shorten the time spent creating new chunks.
Modpacks with many worldgen mods
The feature safety radius and compatibility handling help the mod coexist with other worldgen additions.
Who it’s for: Server owners who run Forge and want faster terrain creation. Players only need the mod on the server.
How it compares
YapiFix is a Forge server mod for 1.20.1 with a license marked All rights reserved, so its source is not open. WorldGen is a client-side Apache-licensed mod for Fabric and Forge across 1.18.2 – 1.20.1, which means it has to be installed on players' machines. Adrenaline differs by running server-side only on Forge, under the MIT License.
| Mod | Loaders | Game versions | Environment | Updated |
|---|---|---|---|---|
| Adrenaline | Forge | 1.20.1 – 1.20.6 | Server-side only | 2026-07-31 |
| YapiFix | Forge | 1.20.1 | Server-side only | 2026-07-06 |
| WorldGen | Fabric and Forge | 1.18.2 – 1.20.1 | Client-side only | 2024-05-25 |
Questions
Does Adrenaline need other mods?
Do players need Adrenaline installed?
Which Minecraft versions does Adrenaline support?
In the catalog
Adrenaline is one of 3,545 Optimization mods on ModsFinder, and one of 1,441 Optimization mods for Forge. 11,154 mods support Minecraft 1.20.6.
More from FlyInMyEye
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What the author says
Adrenaline is a Forge mod for Minecraft 1.20.1 focused on world generation performance. It adds parallel chunk generation, configurable worldgen optimizations, and compatibility handling for problematic mod combinations. Adrenaline takes a more aggressive approach to speeding up world generation. Instead of keeping…
Official listing
- Modrinth page
- modrinth.com/mod/flys-adrenaline
- Owner
- FlyInMyEye
- Published
- 2026-03-27
- Updated on Modrinth
- 2026-07-31
- Facts verified
- 2026-10-15