Fastload Unofficial Port — Fabric 1.21.1

An unofficial community port of Fastload for Minecraft 1.21.1 on Fabric, based on the GPL-3.0-licensed upstream source by StockiesLad, JoostMSoftware, AbdElAziz333, kennytv, and VidTu. This port is not affiliated with the original authors.

Features

• Skips the vanilla spawn-chunk wait during world startup.
• Shows Fastload's progress screen while client chunks load and build.
• Supports separate configurable chunk-preload radii for singleplayer and multiplayer.
• Allows the instant_load setting to skip the terrain screen.
• Keeps world rendering and server resource-pack prompts available during terrain loading.

Requirements

• Minecraft 1.21.1
• Fabric Loader 0.16.14 or newer
• Java 21 or newer
• Mod Menu 11.0.3 is optional for the in-game configuration screen.

Validation

The source compiles and a clean Fabric client starts with the mod. A local Fabric 1.21.1 singleplayer smoke test reached the Overworld, accepted the player on the integrated server, and completed initial chunk preloading. The runtime test used the source project's run configuration; multiplayer joins, respawn, and server resource-pack prompts have not been tested.

Source and license

The complete buildable source is attached as a separate source-code ZIP to the matching Modrinth version: https://modrinth.com/mod/fastload-unofficial-fabric-1-21-1. The Modrinth project is pending moderation, so the archive may not be publicly accessible until approval. Original project and source: https://github.com/BumbleSoftware/Fastload This port is distributed under GPL-3.0-only.

This port was created with AI assistance.