Hostility Inverted (Minecraft Java 1.21.11)

A Fabric mod that flips mob behavior:

• Passive mobs become hostile toward players.
• Hostile mobs become passive toward players, but still attack villagers and iron golems.
• Pillagers and witches can trade with you.
• You can swear loyalty to illagers and help their village raids.

Gameplay

Mob behavior inversion

• Most passive spawn groups (CREATURE, AMBIENT, WATER_CREATURE, WATER_AMBIENT, UNDERGROUND_WATER_CREATURE, AXOLOTLS) now hunt nearby survival players.
• MONSTER mobs are pacified and stop targeting non-villager entities.
• Light is inverted for survival/adventure gameplay: bright areas apply Blindness (mine-like darkness), very dark areas grant Night Vision.

Trading

Right-click a Pillager or Witch with:

• Emerald:
  • Pillager: 16 arrows
  • Witch: random brewing supplies
• Emerald Block:
  • Pillager: crossbow + 32 arrows
  • Witch: experience bottles + ender pearls

Join the illagers

Right-click a Pillager or Witch with an Ominous Bottle to join them.

• This marks you as an illager ally.
• Nearby hostile mobs are redirected to attack villagers and iron golems around you.

To leave the pact: sneak + empty-hand right-click a Pillager or Witch.

Build / run

This project uses Fabric Loom for Minecraft 1.21.11.

1. Ensure Java 21+ is installed.
2. Run:

./gradlew runServer

or

./gradlew build

PaperMC version

A dedicated Paper plugin variant is available in /paper.

Build it with:

./gradlew -p paper build

Output jar:

paper/build/libs/hostility-inverted-paper-1.0.2.jar

Admin command:

/hostilityinverted status [player] (permission: hostilityinverted.admin, default: op)