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Hardcore Fluid Overhaul

by ivangeevo

Hardcore Fluid Overhaul changes how fluids behave in Minecraft, so water and lava must be handled with more care than a plain bucket allows.

FabricClient and serverCreative Commons Attribution 4.01.20.1 – 1.21.1

What it does

Fluid handling becomes semi-realistic. Water source blocks cannot be placed, lava cannot be picked up with a bucket, and waterlogged blocks lose their stored water when they are broken. Several of these rules can be switched off in the config, including whether lava is collected with buckets, whether collecting a fluid source consumes the source block, whether waterlogging is enabled, and whether broken waterlogged blocks dissipate their water.

The mod is inspired by Better Wolves and aims to bring back logistics planning around fluid use. Ice that melts can release dissipating water, which is also a toggle. Since fluids are no longer moved with a plain bucket, the mod suits packs that add pipes and machines for fluid handling, letting players build the transport network themselves. It requires BTWR: Shared Library and Fabric API, and runs on client and server, so both the server and every player need it. Files are published for Fabric only, for 1.20.1, 1.20.6, 1.21 and 1.21.1, under the Creative Commons Attribution 4.0 license, which is not open source.

Key features

  1. Restricted water placement

    Water source blocks cannot be placed, so water has to come from its existing sources or from other fluid systems.

  2. Bucket limits for lava and sources

    Lava cannot be acquired with buckets by default, and collecting a fluid source can consume the source block.

  3. Waterlogging rules

    Waterlogged blocks lose their stored water when broken, and waterlogging itself can be turned off.

  4. Ice meltwater control

    Ice that melts releases dissipating water, and this behavior can be toggled.

Compatibility

Latest build for each game version and loader.

1.21.11.5
1.211.0
1.20.61.0
1.20.11.0
ReleaseBetaAlphaNot available

Only full game releases are shown. This mod publishes no snapshot builds.

Requirements

Dependencies declared by the latest file for each loader.

Required 2

BTWR: Shared LibraryA library mod for the "Better Than Wolves: Remastered!" project.
Required
Fabric APILightweight and modular API providing common hooks and intercompatibility measures utilized by mods using the Fabric toolchain.
Required

Use cases

Pipe-based fluid networks

With buckets restricted, players rely on pipes and pumps from other mods to move fluids over distance.

Survival resource planning

Fluid sources become finite to manage, which adds planning to water and lava use in survival worlds.

Who it’s for: Players who want slower, more deliberate fluid handling in survival, and server owners who prefer pipe and machine transport to bucket carrying.

Questions

Does Hardcore Fluid Overhaul need Fabric API?

Yes. It requires both BTWR: Shared Library and Fabric API, and both must be installed alongside the mod on Fabric.

Does the server need Hardcore Fluid Overhaul?

Yes. A server running it needs every connecting player to have it too.

Can the fluid rules be changed?

Yes. Lava collection, source consumption, waterlogging and meltwater dissipation each have a toggle in the config.

Which game versions does the mod support?

Files exist for 1.20.1, 1.20.6, 1.21 and 1.21.1, with 1.5 for 1.21.1 as the latest file, published on 2026-09-12.

More from ivangeevo

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What the author says

Inspired by Better Than Wolves, it reintroduces meaningful logistics and planning around fluid use. These mechanics pair well with mods that add mechanical or industrial fluid handling, requiring effort and infrastructure instead of simple bucket transport.
ivangeevo, on the Modrinth page

Official listing

Owner
ivangeevo
Published
2024-08-02
Updated on Modrinth
2026-09-12
Facts verified
2026-10-15