CWSM Expansion
Java mod listed for Minecraft 1.20. File opened and checked on 15 Oct 2026; downloads from the MC Java Mods app on Android.
⬇ Download on CurseForgeThe author built this one for Minecraft 1.20.1 on Forge. On other versions it may install and then do nothing.
Cracker's Wither Storm Expansion (or CWS Expansion) adds more content to Cracker's Wither Storm Mod.
Requires Cracker's Wither Storm Mod to function.
Main Features:
New Sickened Mob: The Sickened Infector
The Sickened Infector is a mob that serves the purpose of infecting animals with wither sickness. While at first glance, it appears as a sickened spider, it has pink eyes with a red crack. Sometimes when biting animals, they will get infected with Wither Sickness, turning them into sickened mobs. If made to attack monsters, it can also infect them.
Sickened Silverfish
The Sickened Silverfish is primarily a sickened version of a silverfish, which is the form of a silverfish infected with Wither Sickness, and taken over by the command block, forced to follow orders. While Sickened Silverfish cannot infect animals, they can serve as a combat unit for the command block.
Items
Several new items added by the mod appear, such as raw storm pieces. Raw Storm Pieces are an edible food item, but they might inflict the wither effect. Cooking Storm Flesh will remove its withering properties, making it safe to eat. Most of these aren't obtainable in survival, though currently only accessible in the Creative Inventory.
Upcoming Features:
A way to get the new items.
Allowing the new sickened mobs to appear in the bowels.
Fixing this weird problem where the Wither Storm picks up the new sickened mobs with its tractor beam.
- Edition: Minecraft Java
- File type: .jar
- Minecraft version listed: 1.20.1
- How to install: Install the matching mod loader (Forge, Fabric or NeoForge) for your Minecraft version. → Download the .jar. → Put it in the .minecraft/mods folder and launch that loader profile.
- 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 Java mods & modpacks walks through it step by step.
- Ships as cws_expansion-1.2.0-forge-1.20.1.jar — drop this file into the mods folder
- Download size: 334 KB
- Download link checked 3 Oct 2026 — working
These come from our own check of the pack file, not from the source page.