This is a simple mod that sets the no fire tick gamerule to false everytime the game/server loads, which then stops fire from spreading in the world 

🔥 How Fire Spread Works

Minecraft’s fire system is governed by a repeating “fire tick” that controls whether fire spreads, burns blocks, or goes out.

The gamerule doFireTick determines whether fire behaves normally.

• Enabled (true) → fire spreads, burns blocks, and extinguishes naturally
• Disabled (false) → fire becomes static and does not spread or burn anything

🔥 Why Fire Spread Matters on Servers

1. Fire spread can destroy player builds

On a multiplayer server, one careless torch, lava bucket, or lightning strike can:

• Burn down entire wooden bases
• Spread through forests
• Jump across roofs
• Trigger chain reactions

On a public or semi‑public server, this becomes a griefing vector, even if unintentional.

2. Fire spread causes lag

Every fire block performs multiple random tick checks:

• Should the fire go out?
• Should it spread?
• Which adjacent blocks are flammable?
• Should those blocks ignite?

In large forests or big builds, this can mean thousands of checks per second, especially during:

• Lightning storms
• Lava near trees
• Player‑made fires
• Nether hubs with lots of netherrack

Disabling fire spread reduces server load.

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3. Fire can spread across unloaded chunks

This is a subtle one:

• Fire can start in a loaded chunk
• Spread to the border
• Load adjacent chunks
• Continue spreading

This can cause:

• Unexpected chunk loads
• TPS drops
• Large‑scale forest fires that nobody sees happening

Admins often disable fire spread to avoid these “invisible disasters.”

4. Fire spread interacts badly with mods

On modded servers, fire can:

• Trigger block updates in modded blocks
• Cause tile entities to tick more
• Break machines
• Spread to modded wood types with high flammability
• Interact with worldgen structures in unpredictable ways

This is why many modpacks would want to ship with fire spread disabled by default.

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5. Server rules and fairness

Many servers want:

• Decorative fireplaces
• Campfires
• Torches
• Nether portals

…but don’t want fire to behave realistically.

Disabling spread allows fire to exist without risk.

Simply put this in the "mods" folder of you server or modpack. Server-side is fully supported.