Sculk Catalyst Overrun
Bedrock add-on listed for Minecraft 1.21 (behavior + resource pack). File opened and checked on 21 Sep 2026; installs from the MC Bedrock Mods app on Android.
Killing mobs creates Sculk Catalysts that convert XP into sculk charges, spreading sculk blocks and increasing dangerous mob and creeper spawns nearby.
⬇ Download on CurseForge
Sculk Catalyst Overrun V1.0
Sculk Catalyst Overrun transforms your Minecraft Bedrock world into a growing sculk infection where every mob death strengthens the sculk’s power.
When a player kills any mob, a vanilla Sculk Catalyst appears at the death location. The catalyst converts the mob’s XP into sculk charges, which spread outward and transform nearby blocks like stone, dirt, and deepslate into:
- Sculk
- Sculk Veins
- Sculk Sensors
- Sculk Shriekers
As the sculk spreads, it also increases the local mob spawn rate, especially Creepers, making infected areas far more dangerous over time.
This addon uses only vanilla Minecraft blocks and mechanics, ensuring full compatibility and a natural gameplay experience.
Features
- Vanilla Sculk Catalyst spawns when mobs are killed
- Realistic sculk spreading system using sculk charges
- Converts nearby terrain into sculk ecosystem blocks
- Increased hostile mob spawn rate near catalysts
- Higher Creeper spawn chance in infected areas
- Fully automatic system with no commands required
- Compatible with Minecraft Bedrock Edition (MCPED)
Perfect for:
- Survival challenges
- Horror and infection gameplay
- Hardcore worlds
- Custom sculk biome creation
For bug reports, support, or suggestions, please join my Discord server: https://discord.gg/9RsSm9Yf72 and contact me there.
- Edition: Minecraft Bedrock
- File type: .mcpack or .mcaddon
- Minecraft versions listed: 1.21.114, 1.21.120, 1.21.122
- How to install: Download the .mcpack or .mcaddon file. → Open it — Minecraft imports it. → In your world: Behavior Packs → Available → Activate, then the same under Resource Packs.
- Where to get it: Opens on CurseForge — not every file is mirrored on our own servers.
Install steps are the general flow for this file type — How to install Minecraft Bedrock addons & mods walks through it step by step.
- Pack type: .mcaddon — behaviour and resource pack in one file
- Manifest requires Minecraft 1.21.0 or newer
- Complete pack — everything it depends on is inside the file
- Download size: 2.9 MB
- Download link checked 6 Oct 2026 — working
These come from our own check of the pack file, not from the source page.