Lethality - A Terramity Addon

A Terramity addon that adds some weapons from the Terraria Calamity mod.

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About this Mod

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« Hand it over. That thing, your Dark Soul. »

This mod is an addon for Terramity, it adds various weapons from the Calamity mod (originally from Terraria) and tries to implement them in a vanilla-ish way.

Have in mind that nothing is final and there can be some important changes in the future! Especially related to balance and crafting recipes.

Even though it's not required, it is HEAVILY recommended to play with Better Combat since the way most weapons work is basically meant to be played with it.

If you find any bugs or crashes, please send me the logs via the Terramity discord post and I'll help you as much as I can!

Enjoy!

Available Versions

Lethality 0.1 - 1.20.1beta

MC 1.20.1forge

June 7, 2025

How to Install Lethality - A Terramity Addon on Your Server

Order Server

Order a Minecraft Java server with at least 3 GB RAM (4 GB recommended).

Set forge Loader

In the panel under "Egg", select the forge loader and matching Minecraft version (1.20.1).

Install Mod

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

Compatibility

Mod Loaders

forge

Minecraft Versions

1.20.1

Server-side

✓ Required

Recommended RAM

4 GB(min. 3 GB)

Frequently Asked Questions

Lethality - A Terramity Addon server crashes on startup – what to do?

Most common cause: wrong forge version or insufficient RAM. Check the server log (latest.log) for "OutOfMemoryError" or "Mixin" errors. With Mado Hosting: ensure at least 3 GB RAM is allocated and the loader matches the mod version (1.20.1). You can switch loaders with one click in the panel.

Is Lethality - A Terramity Addon compatible with forge?

Lethality - A Terramity Addon officially supports forge for Minecraft 1.20.1. The Mado dashboard automatically detects incompatible loader combinations.

Server lagging with Lethality - A Terramity Addon – how to optimize performance?

Recommended RAM: 4 GB (per 8 players). Use /spark profiler to check if Lethality - A Terramity Addon 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.