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

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

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

Every fire block performs multiple random tick checks:

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

Disabling fire spread reduces server load.

This is a subtle one:

This can cause:

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

On modded servers, fire can:

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

Many servers want:

…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.