Merged Blocks
by RexGildo
Merged Blocks combines Minecraft blocks vertically, horizontally and diagonally into new merged shapes, and is published for Forge on 1.20.1.
What it does
Players merge vanilla blocks into combined forms along vertical, horizontal and diagonal axes. The mod's own description says it theoretically yields over 2,000,000 combinations, which gives builders far more shape variety than the base game offers. Diagonal blocks render with upside-down and right-side-up variants, and the author lists this as one of the mod's working features.
The author describes the mod as not yet finished and expects some minor and major bugs, so it suits builders who accept an early release. Known issues include buggy shift-crafting and face culling that has not yet been implemented, and the author notes that frame rates drop as the number of merged blocks grows. The Forge file is marked beta and targets 1.20.1 only.
Merged Blocks is a client and server mod, so the server and every player need it. The files are released under the Creative Commons Attribution Non Commercial No Derivatives 4.0 license, which means the mod is not open source. It has no required dependencies beyond Forge.
Key features
Vertical merging
Blocks can be stacked into merged forms along the vertical axis, extending the shapes builders can place.
Horizontal and diagonal merging
Blocks combine horizontally and diagonally, with diagonal pieces rendering in upside-down and upright orientations.
Large combination count
The author states the system allows over 2,000,000 combinations, offering many shapes from familiar materials.
Known limitations
Shift-crafting is buggy and face culling is not yet in place, and frame rates can fall when many merged blocks are present.
Gallery
Compatibility
Latest build for each game version and loader.
Only full game releases are shown. This mod publishes no snapshot builds.
Use cases
Decorative building
Builders who want more shape variety than vanilla blocks give can combine materials into custom decorative forms.
Who it’s for: Builders looking for more block shapes who accept an unfinished beta release with known bugs and possible frame rate drops.
How it compares
Vertical Slab's Vertical Slabs is a Forge mod for 1.20.1 – 1.20.6 that is not open source, released under the MIT License, and runs on client and server. Horizontal Doors targets Fabric, Forge and NeoForge for 1.20.1 – 1.20.6 and is open source under the Apache License 2.0. Diagonalization is open source under the MIT License and covers 1.18.2 – 1.19.2 on Forge only.
| Mod | Loaders | Game versions | Environment | Updated |
|---|---|---|---|---|
| Merged Blocks | Forge | 1.20.1 | Client and server | 2026-02-03 |
| Vertical Slab's Vertical Slabs | Forge | 1.20.1 – 1.20.6 | Client and server | 2025-04-14 |
| Horizontal Doors | Fabric, Forge and NeoForge | 1.20.1 – 1.20.6 | Client and server | 2026-07-27 |
| Diagonalization | Forge | 1.18.2 – 1.19.2 | Client and server | 2023-05-05 |
Questions
Does Merged Blocks need to be installed on the server?
Which loader and game version does Merged Blocks support?
Why does the mod warn about bugs?
In the catalog
Merged Blocks is one of 12,078 Decoration mods on ModsFinder, and one of 6,149 Decoration mods for Forge. 34,764 mods support Minecraft 1.20.1.
Similar mods
What the author says
Need more variety when building? With this mod, all Minecraft blocks can be merged in vertical, horizontal, and diagonal combinations (Merged Blocks). This mod theoretically adds 2,000,000+ combinations. Since this is my first mod, some minor or major bugs are to be expected. In addition, the mod is not yet well…
Official listing
- Modrinth page
- modrinth.com/mod/merged-blocks
- Owner
- RexGildo
- Published
- 2026-02-01
- Updated on Modrinth
- 2026-02-03
- Facts verified
- 2026-10-15