Strength In Numbers

Version	1.1.1
Minecraft	1.20, 1.20.1
Loaders	Fabric, Forge
Download	CurseForge

Mobs of a kind stick together.

Hit a cow and its whole herd stampedes. Spook a sheep and the flock bunches up around its lambs, then bolts. Pick a fight with a llama and its herd spits back. Zombies that find you in threes stop shambling at you in single file and close in from several sides, while skeletons hold their fire rather than shoot their own.

What each herd does

• Cows and mooshrooms stampede as one when a member is hurt.
• Horses, donkeys, and mules follow an old leader, freeze when they spot a wolf, then bolt. Hurt one and the herd stampedes.
• Sheep huddle around their lambs, then flee.
• Pigs, rabbits, foxes, turtles, striders, and camels scatter and run.
• Chickens panic every which way, and some flap into the air.
• Llamas, goats, polar bears, and pandas defend the herd. Goats ram.
• Zombies, husks, zombie villagers, and wither skeletons hunt in packs: three or more join one another’s attacks and come at you from the sides. A pack that loses half its members falls back, regroups, and comes again.
• Skeletons and strays join the attack but hold fire while a herd mate is in the way.
• Spiders and cave spiders gang up, and witches join one another’s fights.
• Animals that wander off drift back to their herd.

Wolves, piglins, hoglins, illagers, and other mobs that already act as groups in vanilla stay as they are.

Your farm is safe

Animals you keep never join a herd. Leashed, name-tagged, tamed, saddled, ridden, and player-bred animals, and llamas in a caravan, stay put, and when you hit one it panics the vanilla way. Wild animals you fence in still act as a herd until you name them, and babies you breed from them start out kept. On Peaceful, no herd reaction makes a mob target you.

Installation

Strength In Numbers needs Stope, a small library mod. The CurseForge app installs it for you.

• Fabric, Minecraft 1.20 or 1.20.1: Strength In Numbers, Stope’s Fabric file (2.0.1 or newer), and Fabric API.
• Forge, Minecraft 1.20 or 1.20.1: the same Strength In Numbers file and Stope’s Forge file (2.0.1 or newer). Nothing else: Strength In Numbers runs natively on Forge, without Sinytra Connector. Forge 46.0.14 runs 1.20; Forge 47 runs 1.20.1.
• Optional: Mod Menu on Fabric adds an in-game settings screen in single player. On Forge it is in the Mods screen, with nothing extra.

Common questions

Does everyone on my server need it? No. It runs on the server, and players join without it. Install it on your own client for the settings screen in single player.

Will it slow my server down? It is built to stay light. In a test with 1,200 animals, 1,000 of them in pens, it added about half a millisecond per server tick on the developer’s machine.

Does it work with other herd mods? No. It will not start alongside HerdsPanic, Herd Mentality, Herd Instinct, Herd Hysteria, or Animals herding, which change the same behavior. Keep one.

Does it work with TrailWright? Yes. Herds wear trails faster, as you would expect.

Can I turn off a reaction I don’t like? Yes. Every reaction has its own switch in the settings, and rules can change any species.

Settings and custom rules

• Settings: config/strengthinnumbers/strengthinnumbers.json, or the settings screen in single player (Mod Menu on Fabric, the Mods screen on Forge), applied without a restart: herds on or off, how often mobs check their herd, debug logging, and a switch for every reaction.
• Rules for every species live in data packs or in config/strengthinnumbers/rules/, which always wins. Change herd size and range, turn reactions on or off, combine them, or give mobs from other mods a herd. A guide with copy-paste examples is written to config/strengthinnumbers/RULES.md.
• Mod authors and modpack makers can ship rules in a data pack or in a mod’s data/<namespace>/herd_rules/ folder, for their own mobs or for vanilla ones. A rule for a mob that is not installed does nothing, so one pack can cover optional mods. Players’ own rules in the config folder still win.

Modpacks

You’re welcome to include Strength In Numbers in your modpack. No need to ask, as long as:

• the pack is distributed on Modrinth or CurseForge, and references this project page rather than bundling the jar wherever the platform allows;
• the jar is unmodified;
• the pack’s page credits Strength In Numbers and links here; and
• the pack is free.

For anything outside these terms, such as a paid pack, another platform, or a modified jar, email KillenCraft@pm.me.

Servers, videos, streams, and reviews are fine too, including monetized ones.

License and credits

Copyright (c) 2026 Scott Killen. All rights reserved. See LICENSE for the full terms.

The icon uses “Cow”, “Sheep”, and “Chicken” by Delapouite, from game-icons.net, licensed under CC BY 3.0. Modified.

Community

• Questions and clips of stampedes: the KillenCraft Discord.
• Feature requests: open an issue and pick the feature request form.
• Bug reports: open an issue on GitHub and pick the Strength In Numbers form. It asks for your Minecraft version, loader, the versions of this mod and Stope, and a link to your log (logs/latest.log, uploaded to mclo.gs). One issue per bug.