!SLABBED — a Minecraft promo banner: blocky white "SLABBED" lettering over sunset hills, with torches, lanterns, a bed, a crafting table, a flower pot, a door, and a chicken all sitting happily on stone slabs.
FINALLY! Put stuff on slabs!
Hang lanterns from slabs! Stack blocks on slabs! Stack blocks on those blocks on those slabs!* Your slabs finally get the love they deserve 💖
*Slabbed is still in beta. Expect some rough edges while it continues to improve and expand.
What Slabbed does
In vanilla Minecraft, slabs are weirdly stubborn little half-blocks. They look like they should support things, connect to things, and behave like real building surfaces, but the game often treats them like awkward not-quite-blocks instead.
Slabbed changes that. It makes slabs act more like usable building surfaces, so supported blocks and objects can sit at slab height instead of floating, refusing to place, or pretending the slab is not there.
| In vanilla Minecraft | ✨ With Slabbed ✨ | |
|---|---|---|
| 🧱 | Many blocks want a full block underneath them. Slabs do not always count. Rude. | More blocks can use slabs as support and sit where the slab surface actually is. |
| 🏮 | Hanging or standing objects can float, refuse to attach, or land at full-block height. | Torches, lanterns, signs, fences, walls, panes, chests, hoppers, crafting tables, furnaces, and other supported blocks line up with slab height. |
| 🧩 | Building upward from slabs gets awkward fast. | Blocks and objects can stack more naturally on slab-supported structures. |
| 👀 | What you see and what Minecraft thinks is there can disagree. | Slabbed works to keep the visible object, outline, and interaction target in the same place. |
| 💖 | Slabs are useful, but the game makes them fussy. | Slabs become friendlier building surfaces. Still slabs. Just less derpy. |
The long-term goal is broad slab support. The actual path is more careful: one block family at a time, proven by behavior, because Minecraft is Minecraft and it will absolutely make this more complicated than it looks.
New in 0.4.0-beta
This release brings Slabbed to Minecraft 1.21.1 and keeps improving the Minecraft 1.21.11 line.
Each Minecraft version has its own download, so make sure you grab the file tagged for your version. Same slabby nonsense, correct jar.
| Version | What's new | |
|---|---|---|
| 🆕 | Minecraft 1.21.1 | First Slabbed port for this version, including Terrain Slabs compatibility. |
| 🧽 | Minecraft 1.21.11 | Continued polish, compatibility fixes, and fewer floaty/ghosty edge cases. |
Countered's Terrain Slabs Compatibility
With Countered's Terrain Slabs installed, terrain slabs become proper Slabbed support instead of just decoration. Slabbed still works without Terrain Slabs, but if you build with them, this is the good stuff:
| Terrain Slabs support | What changed | |
|---|---|---|
| 🪶 | Flush, not floaty | Torches, lanterns, fences, walls, glass panes, signs, chests, hoppers, furnaces, crafting tables, and selected decorative cubes sit on Terrain Slabs surfaces like they do on vanilla slabs. |
| 🌿 | Vegetation behaves | Short grass, ferns, and tall grass sit on Terrain Slabs terrain instead of sinking into the floor and entering witness protection. |
| 🧩 | Combined slabs | Vanilla slabs placed on Terrain Slabs surfaces combine into a lowered surface, and supported objects follow that height. |
| 🔌 | Optional compat | Slabbed still works without Terrain Slabs. No Terrain Slabs? No problem. |
| 🕳️ | No more world gaps | Natural Terrain Slabs terrain stays put instead of opening see-through holes into the world. The void can wait its turn. |
And because 0.4.0-beta is not only about Terrain Slabs, a lot of general Slabbed weirdness got sanded down too:
| General Slabbed polish | What got better | |
|---|---|---|
| 🎯 | Targeting and outlines | Better agreement between the crosshair, selection outline, and visible lowered block. |
| 👻 | Rendering | Fewer ghost-window moments on exposed lowered-block step faces. |
| ⬇️ | Placement stability | Less snapping up or down when nearby slab support changes. |
| 🧱 | Stacking | Cleaner stacking for objects, full blocks, vanilla slabs, and combined slabs. |
| 🔗 | Connectors | Better fence, wall, and glass-pane behavior across Slabbed height steps. |
Build support-first: a block placed in mid-air will not retroactively drop when you add support underneath later. Place it on the support you want, or break and replace it. Minecraft makes this weird. Slabbed makes it less weird.
Still rough
Slabbed is still beta, and some things may be a little spicy:
| Rough edge | Current state | |
|---|---|---|
| 🧶 | Carpets and very thin top layers | Excluded from offsets for now. |
| ⚡ | Rails and redstone | May still have visual or connection edge cases. |
| 🎨 | Heavily custom modded blocks | May need dedicated compatibility work if they do unusual things with shapes, rendering, collision, placement, or models. |
| 🗼 | Very deep compound arrangements | Some deep or compound lowering is intentionally capped so targeting stays reliable instead of eating your clicks. |
If something looks wrong, it probably is, and it is probably worth reporting. Just see if it has already been reported first, pleeease.
Compatibility
- Minecraft: 1.21.11 and 1.21.1
- Mod loader: Fabric + Fabric API
- Multiplayer: install on both client and server so visuals, outlines, and targeting agree.
- Terrain Slabs: Countered's Terrain Slabs is supported, but optional.
- Terrain Slabs mod ids: supports both the modern
terrain_slabsmod id and the legacyterrainslabsid.
Mods that heavily customize block shapes, rendering, collision, placement, or models may still need dedicated compatibility work.
🐛 Reporting bugs
Bug reports are super duper helpful! The most useful ones include:
- Minecraft, Slabbed, Fabric Loader, and Fabric API versions
- Other installed mods, especially Terrain Slabs
- Exact placement steps
- What you expected vs. what actually happened
- A short screenshot or video, especially for crosshair, placement, outline, or visual-height mismatches
➼ What's next
Next up is more careful slab support, one behavior family at a time:
- More supported object categories
- Tighter agreement between models, outlines, and raycasts
- Dedicated compatibility for weird modded blocks that need it
- Fewer wrong-target moments
- Less floating. Less fussing. More slab.
- And, of course, MORE PORTING!!! Coming soon to 26.1.2!!
Slabbed's goal is simple:
Things should sit where they look like they sit.
Minecraft makes that surprisingly complicated.
💖 Thanks!
Slabbed is made by one person and is still actively evolving. Every bug report, screenshot, video, and weird edge case helps make slab-supported building better. Thank you for playing with Slabbed and helping me make it what it is!
:3 Peetsa
💙 Slabbed on Modrinth
Are you a slab fan??? Throw Slabbed a ❤️ on Modrinth! 🧱✨
Highly recommended: Countered's Terrain Slabs