Smooth Spheres
by YBZSG
Smooth Spheres adds decorative sphere blocks in nine finishes, from metal and chrome to crystal and glowing variants, that players can set in motion with a right-click.
What it does
Each sphere block is a smooth decorative piece, and the mod provides nine of them in styles ranging from polished metal to translucent glass and glowing versions. They sit in a custom creative tab, so they are simple to locate while building. Right-clicking a sphere block launches a physics sphere, and right-clicking that sphere launches it again, which gives the blocks a playful use beyond decoration.
The physics runs on a lightweight system built on Minecraft entity physics rather than a full rigid-body engine. Walking into a physics sphere pushes it, and arrows, fireballs, eggs and other projectiles also push it. Smooth Spheres is a client-side mod for Fabric that needs Fabric API, and it is released under the MIT License as open source. Files cover only 1.21.4, with version 1.0.0 published on 2026-05-03, and the source code is public.
Key features
Nine sphere finishes
Smooth decorative sphere blocks come in several surface styles, including translucent and glowing versions.
Launch by right-click
Right-clicking a sphere block releases a physics sphere, and right-clicking a physics sphere sends it off again.
Pushed by walking and projectiles
Players who walk into a physics sphere push it, and arrows, fireballs, eggs and other projectiles push it too.
Custom creative tab
The sphere blocks are grouped in a dedicated creative tab, so they are simple to find in the inventory.
Gallery
Compatibility
Latest build for each game version and loader.
Only full game releases are shown. This mod publishes no snapshot builds.
Requirements
Dependencies declared by the latest file for each loader.
Required 1
Use cases
Who it’s for: Players who want decorative sphere blocks with a light physics effect on Fabric, and builders looking for smooth-surfaced ornaments for 1.21.4 worlds.
How it compares
SientVisuals is a Fabric mod for 1.21.4 under the MIT License, and it is client-side only like Smooth Spheres, but its open-source status is not recorded in this catalog. physics blocks mod is also Fabric, yet it targets 1.21.11, needs both client and server, and is under All rights reserved. Visual+ is Fabric for 1.21.11, client-side only, and is licensed under Creative Commons Attribution Non Commercial No Derivatives 4.0.
| Mod | Loaders | Game versions | Environment | Updated |
|---|---|---|---|---|
| Smooth Spheres | Fabric | 1.21.4 | Client-side only | 2026-05-03 |
| SientVisuals | Fabric | 1.21.4 | Client-side only | 2026-06-23 |
| physics blocks mod | Fabric | 1.21.11 | Client and server | 2026-07-25 |
| Visual+ | Fabric | 1.21.11 | Client-side only | 2026-02-20 |
Questions
Does Smooth Spheres need Fabric API?
Does the mod have to run on a server?
Does the physics need a shader pack for realistic effects?
In the catalog
Smooth Spheres is one of 8,499 Technology mods on ModsFinder, and one of 4,201 Technology mods for Fabric. 17,979 mods support Minecraft 1.21.4.
Similar mods
What the author says
Smooth Spheres adds decorative smooth sphere blocks to Minecraft 1.21.4 with Fabric. Real PBR effects depend on shader/resource-pack support such as Iris-compatible shaders. Without shaders, the mod still works with normal vanilla-style rendering.
Official listing
- Modrinth page
- modrinth.com/mod/smooth-spheres
- Owner
- YBZSG
- Published
- 2026-05-03
- Updated on Modrinth
- 2026-05-03
- Facts verified
- 2026-10-15