Lost Souls

Lost Souls

The Lost Cities addon to add more danger to the buildings.

by
84.5K Downloads
forgeneoforgeadventuremobsworldgen
Rent Server with this Mod

About this Mod

Lost Souls

This mod is a simple but very configurable mod that is designed to work with The Lost Cities. It makes buildings a lot more challenging by spawning additional and stronger mobs in them. There is a big chance that a building is 'haunted'. If it is haunted then there very strong vanilla mobs will spawn (boosted for damage and health) until the player manages to kill a specific number of them at which point the building is considered 'cleared'. The mobs spawn when the player is in the building but regardless of lighting level so it doesn't help to light up the building (can be disabled with config).

This mod is very configurable. You can control what kind of mobs can spawn this way, how many can spawn, the kind of armor and weapons they get. How strong they are and so on.

Note that this mod is server-side only.

Modpacks

Feel free to use this mod in any modpack you want.

Available Versions

LostSouls - 1.20-4.1.6release
MC 1.20.1forge
December 26, 2025
LostSouls - 1.20-4.1.5release
MC 1.20.1forge
September 12, 2025
LostSouls - 1.20-4.1.4release
MC 1.20.1forge
August 3, 2025
LostSouls - 1.20-4.1.3release
MC 1.20.1forge
August 2, 2025
LostSouls - 1.20-4.1.2release
MC 1.20.1forge
August 2, 2025

How to Install Lost Souls on Your Server

1

Order Server

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

2

Set forge Loader

In the panel under "Egg", select the forge loader and matching Minecraft version (1.21.1).

3

Install Mod

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

Compatibility

Mod Loaders

forgeneoforge

Minecraft Versions

1.21.1, 1.20.1, 1.19.3 (+5 more)

Server-side

Required

Recommended RAM

6 GB(min. 4 GB)

Frequently Asked Questions

Lost Souls 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 4 GB RAM is allocated and the loader matches the mod version (1.21.1). You can switch loaders with one click in the panel.

Is Lost Souls compatible with forge and neoforge?

Lost Souls officially supports forge, neoforge for Minecraft 1.21.1, 1.20.1, 1.19.3. The Mado dashboard automatically detects incompatible loader combinations.

Server lagging with Lost Souls – how to optimize performance?

Recommended RAM: 6 GB (per 5 players). Use /spark profiler to check if Lost Souls 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 Lost Souls 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
MIT License
Server-side
Required

Supported Versions

1.21.11.20.11.19.31.19.21.18.21.12.21.12.11.12