Custom Flammable Blocks
by luigi052005
Custom Flammable Blocks lets server owners decide which blocks catch fire, by editing a config file that sets each block's flammability.
What it does
The mod changes the flammability of blocks in the world. A config file lets the owner name blocks that should not burn, add a custom flammable property to other blocks, or remove an entry that was added earlier. Entries can also be cleared so that Minecraft's default values apply again.
A toggle switches the mod off without removing it, and the config can be reloaded while the server runs, so changes take effect without a restart. A configuration screen lists the current values. Blocks that the mod makes flammable exclude air, fire and water. Custom Flammable Blocks is published for Fabric only, across 10 release versions, 1.20.1 – 1.21.4, and the latest file, 0.1.0, targets 1.21.4.
Server owners install it, and players connect with no copy of their own. The code is not open source; it is released under All rights reserved, though public source code links exist.
Key features
Non-flammable block list
Specific blocks can be marked as not flammable, so they resist fire spread in the world.
Custom flammability property
A flammability value can be set for any block, giving it a custom fire behavior.
Reset to defaults
Flammability values can be restored to Minecraft's default settings with one config option.
Reloadable config
The config can be reloaded while the server runs, and a screen shows the current configuration.
Gallery
Compatibility
Latest build for each game version and loader.
1.21.x4 of 4 versions with builds
1.20.x6 of 6 versions with builds
Only full game releases are shown. This mod publishes no snapshot builds.
Use cases
Fire-safe builds
A server can keep wooden or decorative blocks from burning in a shared base by adding them to the non-flammable list.
Fire-heavy modpacks
A pack can make more blocks burn than vanilla does, for a harsher fire mechanic on a survival server.
Who it’s for: Server owners who want to change which blocks burn on their own server, and modpack builders who tune fire behavior for a pack.
How it compares
Everything Burns is a Fabric mod for 1.21.1 – 1.21.8 that is client and server, released under the MIT License, and not open source. Fire Bending is a Fabric mod for 1.20.4 – 1.21 that is server-side only and open source under the MIT License, so it fits servers that want a different fire system. Custom Flammable Blocks covers 1.20.1 – 1.21.4 and is also server-side only, but is released under All rights reserved.
| Mod | Loaders | Game versions | Environment | Updated |
|---|---|---|---|---|
| Custom Flammable Blocks | Fabric | 1.20.1 – 1.21.4 | Server-side only | 2025-02-24 |
| Everything Burns | Fabric | 1.21.1 – 1.21.8 | Client and server | 2025-09-07 |
| Fire Bending | Fabric | 1.20.4 – 1.21 | Server-side only | 2024-07-17 |
Questions
Which loader does Custom Flammable Blocks use?
Does a player need the mod installed?
Can the changes be applied without a restart?
In the catalog
Custom Flammable Blocks is one of 29,952 Game mechanics mods on ModsFinder, and one of 19,630 Game mechanics mods for Fabric. 17,979 mods support Minecraft 1.21.4.
Similar mods
What the author says
\ A mod that lets you specify which blocks should be flammable and which shouldn't. /cfb - reload - reload the config. - list - Shows the configuration. - reset - Reset the flammability values to Minecraft's defaults - settings - add - Add custom flammable block property. - remove - Remove flammable block entry from…
Official listing
- Modrinth page
- modrinth.com/mod/custom-flammable-blocks
- Owner
- luigi052005
- Published
- 2025-02-23
- Updated on Modrinth
- 2025-02-24
- Facts verified
- 2026-10-15