Weighted Armor

The data pack changes the armor system of vanilla Minecraft by applying small attribute modifiers while a player wears armor. A player wearing a full set of Netherite feels different when walking than one in leather, even though the basic movement speed and attack speed values stay the same in the default game. Heavier armor reduces attack speed slightly, while higher-tier armor rewards the wearer with a bonus to max health. Chainmail has its own rework, aimed at a light, mobile style that adds small attack speed buffs instead of penalties. The penalties are intentionally subtle and aim to make armor feel different rather than slow the game down.

The pack covers survival single-player worlds and Survival SMP servers, and it works with most other data packs. Items, loot tables, advancements and world generation are left unchanged. Modifiers are recalculated every tick with minimal performance overhead, although the author notes that large servers with many players may see a cost and that a more efficient method may come later. The mod is published for Fabric, Forge, NeoForge and Quilt for 26.2, with five game versions between 1.21.11 – 26.2. It is installed by placing the datapack in the world's datapacks folder and running a reload command in-game, after which a confirmation message appears in chat.