CurseForge · Minecraft mod
iShowSpeed Hardcore Challenge
Hardcore 1.21.x Fabric co-op mod tracking 4 boss kills on a scoreboard. Features Shared Team Death: if one player dies, everyone fails and enters Spectator mode. Slay all 4 bosses together to complete the ultimate challenge!
Quick answer
Which iShowSpeed Hardcore Challenge release should I use?
iShowSpeed Hardcore Challenge hardcore-boss-challenge-26.2-1.0.0.jar targets 26.2 with Fabric. The project page does not say whether this file belongs on the client, dedicated server, or both. No extra mods listed for this file.
Where it goes
Is iShowSpeed Hardcore Challenge required on the client, server, or both?
The project page does not say whether this file belongs on the client, dedicated server, or both.
The source does not explicitly classify this release as client-only or server-only.
What else does iShowSpeed Hardcore Challenge hardcore-boss-challenge-26.2-1.0.0.jar need?
hardcore-boss-challenge-26.2-1.0.0.jar. Change the file and its required mods may change too.
This file does not list any required mods. Do not add a library just because a different file uses it.
This file does not list any required or optional mods.
Before you install it
Add iShowSpeed Hardcore Challenge without breaking your instance.
Built for iShowSpeed Hardcore Challenge hardcore-boss-challenge-26.2-1.0.0.jar. Pick another file and the loader, install side or required mods may change.
- 01
Stick to this file
Use hardcore-boss-challenge-26.2-1.0.0.jar. It targets 26.2 with Fabric; another release may have different loader, side or dependency requirements.
- 02
Bring the mods it needs
This file does not list any required mods. Do not add a library just because a different file uses it.
- 03
Put it on the correct side
The project page does not say whether this file belongs on the client, dedicated server, or both.
- 04
Pick the file you checked
Use the “Get this file” button beside hardcore-boss-challenge-26.2-1.0.0.jar. It opens that exact file at the source.
About this project
What does iShowSpeed Hardcore Challenge add?
Hardcore 1.21.x Fabric co-op mod tracking 4 boss kills on a scoreboard. Features Shared Team Death: if one player dies, everyone fails and enters Spectator mode. Slay all 4 bosses together to complete the ultimate challenge!
NOTE : Need fabric API to run!
Project description from CurseForge.
Pick your setup
iShowSpeed Hardcore Challenge by Minecraft version and loader
Choose the version and loader you play, then open the matching release.
1.21.11
1 loader build1.21.1
1 loader build1.20.5
1 loader build1.20.1
1 loader buildCheck the dependencies, then try the file in a copied instance before changing a world you care about.
Recent files
iShowSpeed Hardcore Challenge versions and loaders
hardcore-boss-challenge-26.2-1.0.0.jar
27 Aug 2026
hardcore-boss-challenge-1.21.1-1.0.0.jar
27 Aug 2026
hardcore-boss-challenge-1.20.5-1.0.0.jar
27 Aug 2026
hardcore-boss-challenge-1.20.1-1.0.0.jar
27 Aug 2026
hardcore-boss-challenge-1.21.11-1.0.0.jar
hardcore-boss-challenge-1.0.2.jar
27 Aug 2026
hardcore-boss-challenge-no-timer-1.21.11-1.0.0.jar
hardcore-boss-challenge-1.0.0.jar
26 Aug 2026
Looking for an older file? The official CurseForge project page is in Resources.