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Simplexium

Simplexium

Essential QoL tweaks: Vein Miner, Tree Chopping, Auto Tool & much more!

391
2

Compatibility

Minecraft: Java Edition

1.21.10–1.21.11
1.21.4
1.21.1

Platforms

Supported environments

Client-side
Server-side
Client and server

Creators

DimaYastrebov
DimaYastrebovMember

Details

Licensed ARR
Published last month
Updated 11 hours ago

[NeoForge 1.21.4] v.1.5.4

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Changelog

[1.5.4] - 2026-01-30

in version 1.5.4 i fixed two bugs.

fixed

  • iron door exploit: fixed a bug where smart doors allowed you to open iron doors (and trapdoors) by hand if they were next to each other.
  • throw safety: if the thrown item cannot spawn for some reason (server protection, glitch, etc.), it will now return to your inventory instead of disappearing.

Files

simplexium-neoforge-1.5.4+1.21.4.jar(173.75 KiB) Primary
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Metadata

Release channel

Release

Version number

1.5.4+1.21.4

Loaders

NeoForge

Game versions

1.21.4

Environment

Client and server, best when installed on both

Downloads

1

Publication date

January 30, 2026 at 11:55 AM

Publisher

DimaYastrebov

DimaYastrebov

Member

Version ID