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Skyblock Builder Mod (1.21.1, 1.20.1) – Custom Skyblock Island via Config

Q: What Minecraft version does Skyblock Builder Mod (1.21.1, 1.20.1) – Custom Skyblock Island via Config work with?

The listing gives Minecraft 1.21.1, 1.20.1. This is the version stated by the author or source site, not something we verified ourselves.

Java mod listed for Minecraft 1.20–1.21. Downloads from the MC Java Mods app on Android.

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Skyblock Builder Mod lets you generate custom skyblock islands by using config. You simply create a schematic file using the structure block from vanilla Minecraft, or the Structure Saver item and set possible spawn points for the island.

Skyblock Builder Mod (1.21.1, 1.20.1) – Custom Skyblock Island via Config — Minecraft Java mod, screenshot 1

This mod is server side but can also be used on client to create a skyblock world using the “Skyblock” world type at “More World Options…” setting when creating a new world. For servers, use “skyblockbuilder:custom_skyblock” (1.18+: “skyblockbuilder:skyblock”) as world type in server.properties or in forge-common.toml (config).

Screenshots:

Skyblock Builder Mod (1.21.1, 1.20.1) – Custom Skyblock Island via Config — Minecraft Java mod, screenshot 2

Skyblock Builder Mod (1.21.1, 1.20.1) – Custom Skyblock Island via Config — Minecraft Java mod, screenshot 3

Skyblock Builder Mod (1.21.1, 1.20.1) – Custom Skyblock Island via Config — Minecraft Java mod, screenshot 4

Skyblock Builder Mod (1.21.1, 1.20.1) – Custom Skyblock Island via Config — Minecraft Java mod, screenshot 5

Skyblock Builder Mod (1.21.1, 1.20.1) – Custom Skyblock Island via Config — Minecraft Java mod, screenshot 6

Skyblock Builder Mod (1.21.1, 1.20.1) – Custom Skyblock Island via Config — Minecraft Java mod, screenshot 7

Skyblock Builder Mod (1.21.1, 1.20.1) – Custom Skyblock Island via Config — Minecraft Java mod, screenshot 8

Skyblock Builder Mod (1.21.1, 1.20.1) – Custom Skyblock Island via Config — Minecraft Java mod, screenshot 9

Skyblock Builder Mod (1.21.1, 1.20.1) – Custom Skyblock Island via Config — Minecraft Java mod, screenshot 10

Skyblock Builder Mod (1.21.1, 1.20.1) – Custom Skyblock Island via Config — Minecraft Java mod, screenshot 11

Skyblock Builder Mod (1.21.1, 1.20.1) – Custom Skyblock Island via Config — Minecraft Java mod, screenshot 12

Skyblock Builder Mod Download Links

For Minecraft 1.21.1, 1.21

NeoForge version: Download from Server 1 – Download from Server 2

For Minecraft 1.20.1, 1.20

Forge version: Download from Server 1 – Download from Server 2

For Minecraft 1.19.2

Forge version: Download from Server 1 – Download from Server 2

For Minecraft 1.19.1

Forge version: Download from Server 1

For Minecraft 1.19

Forge version: Download from Server 1

For Minecraft 1.18.2

Forge version: Download from Server 1 – Download from Server 2

For Minecraft 1.17.1

Forge version: Download from Server 1

For Minecraft 1.16.5

Forge version: Download from Server 1

Quick facts

Edition: Minecraft Java
File type: .jar
Minecraft versions listed: 1.21.1, 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: In MC Java Mods, or directly above on this page.

Install steps are the general flow for this file type — How to install Minecraft Java mods & modpacks walks through it step by step.

File checked by MCModsHub

Downloads as 195976.mcaddon
Download size: 557 KB
Download link checked 15 Jul 2026 — working
Mirrored on our own servers — the download does not depend on the original host

These come from our own check of the pack file, not from the source page.

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