april-legacy

april-legacy

A mod bring back multiple April fool function into Minecraft

by
134 Downloads
fabricadventureoptimizationworldgen
Rent Server with this Mod

Screenshots

a random generated infinity dimension

About this Mod

April's Legacy

April's Legacy is a high-performance Fabric mod for Minecraft 1.21.1 that reconstructs and expands upon the unique mechanics introduced in April Fools snapshots. This project brings back the complex voting system, lunar dimensions, and various experimental features with a heavy focus on modern performance and technical compatibility.

Features

a random generated dimension

Voting System

The core mechanic of the mod is a fully functional, server-wide voting system.

  • Dynamic Vote Generation: Randomly proposed rules affecting gameplay, physics, and world generation.
  • Vote Manager: A centralized system to handle pending, active, and finished votes.
  • Custom Rule Implementation: Includes classic rules like "Moon Gravity," "Big Moon," and unique block/item replacement rules.
  • Hacker Protection: Re-implementation of the "Hacker Vote Rule" as a specialized easter egg and anti-cheat mechanism.

Content & World Gen

  • Lunar Dimension: Explore the Moon with custom biomes and crater features.
  • Moon Lab: Procedurally generated structures found in the lunar dimension.
  • New Entities: Including the Moon Cow and other specialized mobs adapted for low-gravity environments.
  • Custom Blocks & Items: Features like Cheese Blocks, Void Bottles, and various technical blocks.

Performance Optimizations

Designed to handle thousands of entities and complex rendering scenarios without lagging the client.

  • Optimized Shadow Rendering: Re-engineered shadow calculation using heightmap sampling to eliminate redundant CPU cycles.

Technical Architecture

  • Codec-Driven Rules: Utilizes Mojang's Serialization API for robust rule synchronization.
  • Fabric Networking: Optimized packet handling for real-time vote state syncing.
  • Data-Driven World Gen: Modern registry systems for biomes, features, and structures.

Commands

  • /vote pending start: Propose a new random vote.
  • /vote rule <rule> approve: Manually apply a specific rule.
  • /vote rule <rule> repeal: Remove a currently active rule.
  • /vote dump_all: Output all registered rules and their current states to the console.

Credits

Certain portions of the logic and implementation are based on the original Minecraft april fools versions codebase by Mojang Studios. These features have been reverse-engineered, refactored, and optimized for the modern Fabric 1.21.1 environment.

Available Versions

april-legacy 1.0.2alpha
MC 1.21.11fabric
February 3, 2026
april-legacy 1.0.1alpha
MC 1.21.11fabric
February 2, 2026
april-legacy a1.0.0alpha
MC 1.21.11fabric
January 18, 2026

How to Install april-legacy on Your Server

1

Order Server

Order a Minecraft Java server with at least 4 GB RAM (6 GB recommended).

2

Set fabric Loader

In the panel under "Egg", select the fabric loader and matching Minecraft version (1.21.11).

3

Install Mod

Open the mod browser in the dashboard and search for "april-legacy". Click "Install" – done! Alternatively, upload the .jar via SFTP to the /mods folder.

Compatibility

Mod Loaders

fabric

Minecraft Versions

1.21.11

Server-side

Required

Recommended RAM

6 GB(min. 4 GB)

Frequently Asked Questions

april-legacy server crashes on startup – what to do?

Most common cause: wrong fabric version or insufficient RAM. Check the server log (latest.log) for "OutOfMemoryError" or "Mixin" errors. With Mado Hosting: ensure at least 4 GB RAM is allocated and the loader matches the mod version (1.21.11). You can switch loaders with one click in the panel.

Is april-legacy compatible with fabric?

april-legacy officially supports fabric for Minecraft 1.21.11. The Mado dashboard automatically detects incompatible loader combinations.

Server lagging with april-legacy – how to optimize performance?

Recommended RAM: 6 GB (per 5 players). Use /spark profiler to check if april-legacy consumes the most tick time. Common fixes: reduce server view-distance to 8-10, install "performant" or "starlight" as supplementary mods on Forge. With Mado Hosting, your server runs on NVMe SSDs with dedicated CPU cores for minimal latency.

Rent Modded Server

Install april-legacy with just one click on your server.

Recommended RAM
6 GBab €12/mo
Min. 4 GB | +1 GB pro 5 Spieler
Create Server Now
1-Click Mod Install
NVMe SSD Storage
DDoS Protection included

Details

License
Apache License 2.0
Server-side
Required

Supported Versions

1.21.11