BarrierVariant
by .t4bzzz
BarrierVariant gives the barrier block slabs, stairs, iron bars and fences that stay invisible unless a player holds a barrier item or is in creative mode.
What it does
Barrier variants join the vanilla barrier block in a set of shapes: slabs, stairs, iron bars and fences. Half barriers cover fine details, and the bars and fences connect to neighboring pieces of the same kind. Builders use them where a collision or boundary is needed without a visible surface, such as a walkable path through the world or a hidden edge.
By default the new blocks are always visible, but the mod can hide them so they show only while a barrier item is held or the player is in creative mode. Commands that change these settings require operator permissions. The mod is published for Fabric only, for 1.21.1, and runs on client and server, so both the server and every player need it. The code is under the MIT License and is not open source.
Key features
Barrier slabs and stairs
Half and stepped barrier shapes can be placed for fine detail, with the same invisibility rules as the full block.
Barrier iron bars and fences
Bars and fences connect to each other like their vanilla counterparts while staying invisible in play.
Visibility by holding item
The blocks can appear only while a barrier item is in hand or the player is in creative mode.
Operator commands
Commands that change the visibility settings require operator permissions on the server.
Gallery
Compatibility
Latest build for each game version and loader.
Only full game releases are shown. This mod publishes no snapshot builds.
Use cases
Invisible bridges
Barrier stairs and slabs can form a walkable path that stays hidden from players moving through the world.
Hidden boundaries
Barrier fences and bars can mark a border or a playfield without leaving a visible wall.
Who it’s for: Builders, map makers and server owners who want invisible collision shapes for bridges, boundaries and redstone-free mechanics on 1.21.1.
Questions
Does BarrierVariant need Fabric API?
Does the server need BarrierVariant?
Can players see the barrier variants during normal play?
In the catalog
BarrierVariant is one of 12,078 Decoration mods on ModsFinder, and one of 6,982 Decoration mods for Fabric. 32,366 mods support Minecraft 1.21.1.
More from .t4bzzz
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What the author says
This mod adds various barrier variants that are perfect for hidden mechanics, invisible bridges, and creative builds. Found a bug or have an idea? Dm @.t4bzzz on Discord.
Official listing
- Modrinth page
- modrinth.com/mod/barriervariant
- Owner
- .t4bzzz
- Published
- 2025-05-23
- Updated on Modrinth
- 2025-05-25
- Facts verified
- 2026-10-15