Infernum Effugium

Infernum Effugium

A minecraft mod that adds a new nether roof structure, giving access to the nether roof and a new mace.

by
7.0K Downloads
fabricadventureequipmentworldgen
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Screenshots

Infernum Effugium Screenshot 1
Infernum Effugium Screenshot 2

About this Mod

NOTICE: If a version is not tagged with POLYMER, it does not have support for Polymer. I will not make any more versions with polymer, nor support older versions using polymer.

Infernum Effugium

Adds a new nether roof structure allowing for easy access to the Wither fight without grinding and brand new weapons.

Ruined Cities

Ruined Cities are a new structure located on the nether roof that gives access to 3 wither skulls and 4 soul sand to make a wither without having to go around killing wither skeletons (although there are wither skeleton spawners, so you can do that anyways). The city has decent loot, although it's best loot; a treasure bastion loot chest; is located in the towers piece and is guarded by 2 piglin brute spawners!

Ruined City Screenshot

Cake!

Inside the ruined city's main structure

Bedrock Sickles

The bedrock sickles are a new weapon, having their base form along with a netherite-infused form gained from smithing the weapon with a netherite upgrade template.
Bedrock sickles force you to have both sickles in your offhand and mainhand, trading off your utility hand for increased attack damage and insane speeds. Bedrock sickles also always deal upwards knockback.

Bedrock Sickles in the inventory.

Netherite-Infused bedrock sickles in the inventory.

Infernum Mace

Working like the original mace (and working in 1.20!), hitting something with built up fall damage will deal big amounts of damage over time instead of all at once, and will shoot up an array of deadly magma pebbles depending on the fall distance (so don't use it near a wooden base!).

Infernum Maces are crafted with a nether star, stone and a blaze rod.

oh yeah, there's also pebbles. you can stone people in this mod. hell yeah

Pebble Cannon

The pebble cannon is an item to help you throw pebbles faster and longer; requiring pebbles as ammunition. The cannon has a small chance to get jammed and comes with a stew of enchantments inspired by TF2!

Backburner

Deals lethal amounts of Damage Over Time fire damage when getting a successful pebble hit from the back.

Flamethrower

Turns all Blackstone Pebbles into Magma Pebbles.

Ender

Disables gravity on pebble and speeds them up considerably, at the cost of a longer firing time.

Shotgun

Fires 8 pebbles at once and makes the cannon immune to jamming, but makes the cannon take longer to fire. Stacks with ender!

Airblast

Replaces the pebble firing ability of the cannon with a knock-back air-blast that can shoot both you and your opponent back. Increases air mobility when used on self! (better air strafing requires mod to be installed on the client)

Pact Tower & Nether Pact

This mod also adds in the Pact Tower, Nether Pact and Greed Vault.

The nether pact is a irreversible origins-like effect that gives you fire resistance and fire aspect, but makes you take damage while in rain or water.

The Nether Pact will also allow you to walk on lava and give you slightly redder skin (only to players with the mod installed client-side)

You can un-do the effect of the Nether Pact with /un_nether_pact.

Picture of the Greed Vault showing a Blaze Rod surrounded by rocky bushes.

The Pact Tower, completely alone and quiet in the nether roof

Mod """trailer""" here

There is a 10% chance to gain a Death Whistle when killing a cat using Sickles.
Death Whistle Sound Effect Source

Available Versions

Infernum Effugium 1.4.2+1.21.1release
MC 1.21.1fabric
May 9, 2026
Infernum Effugium 1.4.1+1.21.1release
MC 1.21.1fabric
February 24, 2026
Infernum Effugium 1.4+1.21.1release
MC 1.21.1fabric
January 9, 2026
Infernum Effugium 1.3.10+1.21.1release
MC 1.21.1fabric
January 2, 2026
Infernum Effugium 1.3.9+1.21.1release
MC 1.21.1fabric
December 30, 2025

How to Install Infernum Effugium 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 (1.21.6).

3

Install Mod

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

Compatibility

Mod Loaders

fabric

Minecraft Versions

1.21.6, 1.21.4, 1.21.1 (+1 more)

Server-side

Required

Recommended RAM

6 GB(min. 4 GB)

Frequently Asked Questions

Infernum Effugium 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 (1.21.6). You can switch loaders with one click in the panel.

Is Infernum Effugium compatible with fabric?

Infernum Effugium officially supports fabric for Minecraft 1.21.6, 1.21.4, 1.21.1. The Mado dashboard automatically detects incompatible loader combinations.

Server lagging with Infernum Effugium – how to optimize performance?

Recommended RAM: 6 GB (per 5 players). Use /spark profiler to check if Infernum Effugium 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 Infernum Effugium with just one click on your server.

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

Details

License
GNU Lesser General Public License v3.0 only
Server-side
Required

Supported Versions

1.21.61.21.41.21.11.20.1