WitherD
by AudreyAdz
WitherD changes how undead mobs spawn and die across a world once a Wither has been slain, letting players reshape the overworld's hostile population.
What it does
Slaying a Wither permanently culls undead mobs, reducing how often they appear and eventually removing the rarest ones from the world. The reduction can be applied as a flat amount or as a percentage, and a blacklist keeps chosen undead mobs out of the system entirely. Vanilla and modded undead take extra damage from Smite while spawning less often, until they reach a configurable threshold after which they no longer spawn at all. Monster spawners and other unnatural spawning still function, so players and pack authors can work out how phantom membranes and modded undead drops change over time.
A second effect is set off by a Wither kill as well: Piglins and Hoglins can survive outside the Nether without zombifying, and the number of kills needed for the change to take effect is configurable. The mod is built from the ground up for configuration, and it can lift an undead curse or be left alone. Bartering halls can be created in the overworld without exploiting the system. The mod is published for Forge, and it runs on client and server, so both sides need it.
Key features
Undead culling after a Wither kill
Each Wither slain reduces undead spawns, and the culling continues over the course of the world.
Flat or percentage reductions
Players choose whether undead culling removes a fixed amount or a percentage of each mob's spawn rate.
Undead blacklist
Chosen undead mobs can be excluded from the culling system so they keep spawning as before.
Piglins and Hoglins outside the Nether
Slaying a Wither can let Piglins and Hoglins stay in the overworld without zombifying, after a configurable number of kills.
Gallery
Compatibility
Latest build for each game version and loader.
Only full game releases are shown. This mod publishes no snapshot builds.
Use cases
Who it’s for: Players who want Wither kills to change the undead population of a world, and server owners who want a configurable progression tied to boss fights.
How it compares
Baby Horde Moon is Forge-only, client and server, and all rights reserved, so its files cannot be reused. Pillager Undead Hostility is an MIT-licensed Forge mod for 1.20.1 that also runs on client and server. Undead Steve covers Forge and NeoForge under a custom license, while Undead Remains is MIT-licensed for Forge and NeoForge in 1.20.1.
| Mod | Loaders | Game versions | Environment | Updated |
|---|---|---|---|---|
| WitherD | Forge | 1.20.1 – 1.20.6 | Client and server | 2026-03-27 |
| Baby Horde Moon | Forge | 1.20.1 – 1.20.6 | Client and server | 2026-01-25 |
| Pillager Undead Hostility | Forge | 1.20.1 | Client and server | 2025-10-19 |
| Undead Steve | Forge and NeoForge | 1.20.1 – 1.21.1 | Client and server | 2026-08-02 |
| Undead Remains | Forge and NeoForge | 1.20.1 | Client and server | 2026-08-25 |
Questions
Does WitherD need to be installed on the server?
Which loader does WitherD use?
Can the culling be turned off for a single undead mob?
In the catalog
WitherD is one of 19,031 Adventure mods on ModsFinder, and one of 10,478 Adventure mods for Forge. 11,154 mods support Minecraft 1.20.6.
Similar mods
What the author says
Have you ever wanted your actions to affect your world in a big way? Have you ever wanted to truly feel like the hero in Minecraft? Now you (and your friends) can! Introducing - "WitherD" This very simple and highly configurable mod will cause your world to change in 2 key ways when you slay the Wither! First is…
Official listing
- Modrinth page
- modrinth.com/mod/witherd
- Owner
- AudreyAdz
- Published
- 2026-03-17
- Updated on Modrinth
- 2026-03-27
- Facts verified
- 2026-10-15