ModsFinder

Water Weight (Item Buoyancy)

by NightML Studios

Water Weight gives each item a weight value that decides how it behaves when it falls into water, so heavier items sink and lighter ones float.

FabricForgeNeoForgeQuiltServer required, client optionalAll rights reserved1.21 – 1.21.10

What it does

Each item is assigned a weight, and that value determines its buoyancy in water: heavy items drop to the bottom while light items stay near the surface. The effect is applied to items already in the world and to those a player drops. Water Weight needs the server to run it, while a client may add it for the same results on its own screen. Files are published for Fabric, Forge, NeoForge and Quilt, for the 1.21 – 1.21.10 range, and a data pack version is also available.

Key features

  1. Weight-based buoyancy

    Heavier items sink in water while lighter items remain on the surface, so each item moves differently.

  2. Per-item weight values

    Every item carries its own weight value, which sets how far it sinks or floats in water.

  3. Data pack option

    A data pack build is offered for servers that do not want to install a loader mod.

Compatibility

Latest build for each game version and loader.

1.21.x11 of 11 versions with builds
1.21.101.0+mod1.0+mod1.0+mod1.0+mod
1.21.91.0+mod1.0+mod1.0+mod1.0+mod
1.21.81.0+mod1.0+mod1.0+mod1.0+mod
1.21.71.0+mod1.0+mod1.0+mod1.0+mod
1.21.61.0+mod1.0+mod1.0+mod1.0+mod
1.21.51.0+mod1.0+mod1.0+mod1.0+mod
1.21.41.0+mod1.0+mod1.0+mod1.0+mod
1.21.31.0+mod1.0+mod1.0+mod1.0+mod
1.21.21.0+mod1.0+mod1.0+mod1.0+mod
1.21.11.0+mod1.0+mod1.0+mod1.0+mod
1.211.0+mod1.0+mod1.0+mod1.0+mod
ReleaseBetaAlphaNot available

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

How it compares

Full comparison

Water Items is a NeoForge mod for 1.21.8 – 1.21.11 that runs on the client and server together, and it is not open source. RealWeight is also NeoForge, for 1.21.1 only, with the same client and server environment and all rights reserved. Bundle Weight, There's Four! is open source under the GNU General Public License v3.0 or later and runs on Fabric, NeoForge and Quilt, so it covers a different part of the game.

ModLoadersGame versionsEnvironmentUpdated
Water Weight (Item Buoyancy)Fabric, Forge, NeoForge and Quilt1.21 – 1.21.10Server required, client optional2025-10-23
Water ItemsNeoForge1.21.8 – 1.21.11Client and server2025-12-14
RealWeightNeoForge1.21.1Client and server2026-06-30
Bundle Weight, There's Four!Fabric, NeoForge and Quilt1.21.3 – 26.1.2Client and server2026-07-12

Questions

Does Water Weight need to be installed on the server?

Yes. The server is required, and the client is optional, so players can join without it while the server still applies the weights.

In the catalog

Water Weight (Item Buoyancy) is one of 7,555 Cursed mods on ModsFinder, and one of 4,235 Cursed mods for Fabric. 15,569 mods support Minecraft 1.21.10.

Cursed mods7,555Fabric modsMods for 1.21.1015,569

More from NightML Studios

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TreeMiner1.21 – 26.1.2No Copper Ore1.18 – 1.21.10No Diamond Ore1.18 – 1.21.9Quality Advancements1.21 – 1.21.10Layed Out for You1.21 – 1.21.10Severe1.21 – 1.21.8

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Load My F***ing Tags1.17.1 – 1.21.11Philips Ruins1.18.2 – 1.21.11Embeddium (Rubidium) Extra1.16 – 1.21.1From The Fog1.19 – 26.2BetterEnd Crashed Ships Tweaks1.20.1 – 1.21.1BetterHurtCamb1.7.3 – 26.3

What the author says

Minecraft items clearly should have different weights, right? Well, I gave them some. Now items are affected by this weight while in water. Heavier items sink, and lighter items float. So, now items float differently simply based on weight - cool, right? Enjoy!
NightML Studios, on the Modrinth page

Official listing

Owner
NightML Studios
Published
2025-10-21
Updated on Modrinth
2025-10-23
Facts verified
2026-10-15

Tags

CursedEquipmentGame mechanics
Open on ModrinthCompare