Beta Placements
by Rainbow Rose
Beta Placements, a Fabric decoration mod for 1.21.1, changes how stairs, fences, slabs and buttons attach and place, following the placement behavior of the Beta era.
What it does
Stair blocks placed next to each other stay upright and do not connect to non-stair blocks, while corner connections still form as in vanilla. Fences no longer connect to blocks that are not fences. Slabs fill the bottom position before the top, and top-only slabs are prevented from being placed on their own. Buttons cannot be placed on floors or ceilings.
Each of these placement changes can be toggled in the mod's config file. Every option is off by default and can be inverted with a true or false setting, so a server owner can keep only the behaviors they want. Nostalgic Tweaks is one of the Golden Age companion mods that Beta Placements is meant to be paired with.
Beta Placements runs on client and server, so both the server and every player need it. It is released under the MIT License and is not open source. Files exist for 1.21.1 only, and the latest Fabric build is 1.2, published on 2026-09-20 on the beta channel.
Key features
Upright stairs
Stairs placed beside one another stay upright and skip the connection with non-stair blocks, as the Beta-style rule requires.
Fences limited to fences
Fence blocks connect only to other fences and no longer join adjacent blocks of other types.
Bottom-first slabs
Slabs fill the bottom position before the top, and top-only slabs are prevented from being placed.
Wall-only buttons
Buttons can no longer be placed on floors or ceilings, which keeps them on walls.
Toggleable config options
Each change has its own setting in the config file, and the 1.2 update added these options.
Gallery
Compatibility
Latest build for each game version and loader.
Only full game releases are shown. This mod publishes no snapshot builds.
Use cases
Who it’s for: Builders and server owners who want the placement behavior of the Beta era on Fabric 1.21.1, and who want to pick each change individually.
How it compares
Beta Block Placement covers related placement behavior, but it is client-side only, under All rights reserved and not open source, so only players need it. Slabee is a client and server mod under the MIT License and open source, published for 1.21.1 on Fabric. Concrete Expanded is also client and server and under All rights reserved, but its files target 1.21.8 – 1.21.11, which is outside this mod's version.
| Mod | Loaders | Game versions | Environment | Updated |
|---|---|---|---|---|
| Beta Placements | Fabric | 1.21.1 | Client and server | 2026-09-20 |
| Beta Block Placement | Fabric | 1.21.1 | Client-side only | 2026-07-01 |
| Slabee | Fabric | 1.21.1 | Client and server | 2025-06-09 |
| Concrete Expanded | Fabric | 1.21.8 – 1.21.11 | Client and server | 2026-03-18 |
Questions
Does Beta Placements need to be installed on the server?
Which loader does Beta Placements use?
Can each placement change be turned off?
In the catalog
Beta Placements 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 Rainbow Rose
Similar mods
What the author says
New in v1.2: - Slabs place on the bottom of blocks before the top. preventing top only slabs - Buttons can't be placed on the floor or ceiling - New config to disable/enable any of the options both of these are off by default, invert their true/false settings in the config
Official listing
- Modrinth page
- modrinth.com/mod/betaplacements
- Owner
- Rainbow Rose
- Published
- 2026-07-20
- Updated on Modrinth
- 2026-09-20
- Facts verified
- 2026-10-15