Block Beams
by TheEnderCore
With Block Beams, blocks listed in a config file emit colored light beams of particles upward, so a player can see which blocks are marked.
What it does
Block Beams spawns beam-colored particles above any block that appears in its list. The list is built from a tag, and the mod checks which blocks a passing path touches. Configuration covers a wide set of options, and two config types exist, one for the server and one for the client. The mod runs on Fabric and Quilt, for game versions 1.19.3 – 1.21.11, and requires Fabric API and Fabric Language Kotlin, which must be installed alongside it.
The mod is client-side only, so servers run without it and players install it alone. The code is open source under the MIT License, first published 2023-07-20 and last updated 2025-09-30. Server owners who want the tag and block behavior to match their own setup can apply the server-side configuration and set up the tag there; clients then use the server tag.
Key features
Beams above listed blocks
Blocks in the configured list emit colored particles that rise above them, marking them in the world.
Block tag list
The block list is read from a tag, so players and pack makers can add or remove blocks the way they do with vanilla tags.
Path checking
The mod checks which blocks a path passes through and marks the matching ones with beams.
Two config types
Settings are split between a server config and a client config, and the client tag can override the server tag for local display.
Gallery
Compatibility
Latest build for each game version and loader.
1.21.x10 of 10 versions with builds
1.20.x7 of 7 versions with builds
1.19.x2 of 2 versions with builds
Only full game releases are shown. This mod publishes no snapshot builds.
Requirements
Dependencies declared by the latest file for each loader.
Required 2
Use cases
Marking blocks on a map
Players can use the beams to find listed blocks from a distance without searching each one.
Server-controlled pack setups
Server owners can set the block list on the server and decide which settings clients may override.
Who it’s for: Players who want a visual marker on specific blocks, and pack makers who want to control the tag used for those markers.
How it compares
BeamPass is open source under the GNU Lesser General Public License v3.0 only, and runs on Fabric and Quilt for 1.19 – 1.21.5. Its environment works on either side, and neither side needs it. Loot Beams Up is client-side only, under the MIT License, for 1.20 – 1.21.4 on Fabric and Quilt. Block Beams is client-side only too, but it spans 1.19.3 – 1.21.11 and is open source under the MIT License.
| Mod | Loaders | Game versions | Environment | Updated |
|---|---|---|---|---|
| Block Beams | Fabric and Quilt | 1.19.3 – 1.21.11 | Client-side only | 2025-09-30 |
| BeamPass | Fabric and Quilt | 1.19 – 1.21.5 | Client or server, optional | 2025-06-15 |
| Loot Beams Up | Fabric and Quilt | 1.20 – 1.21.4 | Client-side only | 2025-03-16 |
Questions
Does Block Beams need Fabric API?
Does a server need Block Beams installed?
Which loaders does Block Beams support?
In the catalog
Block Beams is one of 12,078 Decoration mods on ModsFinder, and one of 6,982 Decoration mods for Fabric. 19,862 mods support Minecraft 1.21.11.
More from TheEnderCore
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What the author says
A very simple mod that spawns a beam of colored particles above a block --- A very simple mod that spawns a beam of colored particles above a block if the block has 3 block of air or other "passable" blocks above it (see config for more info). Which helps you spot the block better. I originally came up with this idea…
Official listing
- Modrinth page
- modrinth.com/mod/block-beams
- Owner
- TheEnderCore
- Published
- 2023-07-20
- Updated on Modrinth
- 2025-09-30
- Facts verified
- 2026-10-15