Copper Age Backport

(formerly Copper Golem Legacy)

A Minecraft mod that brings the complete Copper Age experience to older Minecraft versions. Starting with the beloved Copper Golem from the Minecraft Live 2021 mob vote, this mod adds copper-related blocks, items, and mechanics, including Copper Chests, Buttons, Statues, and the full oxidation system.

Features

Minecraft Namespace

All vanilla backport features use the minecraft: namespace (e.g., minecraft:copper_chests) to ensure seamless world migration when updating to Minecraft 1.21.10+. Mod-exclusive features like Copper Buttons remain under copperagebackport:.

Copper Golem

Summoned by placing a carved pumpkin on a copper block
Transports items between Copper Chests
Randomly presses nearby Copper Buttons
Four oxidation stages
Iron Golems can now offer flowers to Copper Golems
Configurable oxidation time
Configurable transport stack size
and more

Wooden Shelves

Wooden Shelves (12 wood variants, up to 3 items, redstone output)

End Flash Effect

Periodic sky flashes that illuminate the End dimension with a purple tint
Doesn’t work with shaders because End Flash doesn’t exist in 1.20.1; it was only added in 1.21.4.
Iris/OptiFine only provide the endFlashIntensity uniform on 1.21.4+

Copper Storage & Redstone

Copper Chests with oxidation, waxing, and double chest support

Copper Blocks & Decoration

Copper Buttons (8 variants, won't oxidize while pressed, exclusive to mod)
Copper Statues (4 poses, comparator output 1-4, reversible to golems)
Copper Torch with custom flame particles + wall variant (Amendments compatible)
Copper Lantern (8 variants, light level 15, hanging & standing, Amendments compatible)
Copper Chain (8 variants, rotatable, waterloggable, ConnectibleChains compatible)
Copper Bars (8 variants, connect to blocks, waterloggable)
Lightning Rods (7 new weathering variants, config to disable oxidation, Friends and Foes conversion recipes)
Exclusive to 1.20.1
- Copper Trapdoor (8 variants, hand-openable like wooden trapdoors)
- Copper Door (8 variants, synchronized oxidation, both halves wax/scrape together)
- Chiseled Copper (8 variants, crafting & stonecutting recipes)
- Copper Grate (8 variants, transparent, waterloggable, mobs can't spawn on it)
- Copper Bulb (8 variants, T-flip-flop redstone, light levels 15/12/8/4 by oxidation)

Copper Gear

Copper Tools & Weapons (Pickaxe, Axe, Shovel, Hoe, Sword – stone–iron tier)
Copper Armor (Helmet, Chestplate, Leggings, Boots – between chainmail & iron)
Copper Horse Armor (protection 4, found in various loot chests)

Compatibility & Extras

FastChest support (Fabric & Forge)
Amendments
Friends and Foes
SophisticatedStorage support (NeoForge & Forge)
IronChests support (NeoForge & Forge)
ConnectibleChains support (Fabric & Forge)
Quark support (Forge only)
PaleGardenBackport: Pale Oak Shelf + crafting recipes
VanillaBackport support: Pale Oak Shelf + crafting recipes
Over 50 custom sounds for entities, blocks, and interactions

Localizaion

If you want to help translate this mod into or other languages, you can contribute on Crowdin.

Links & Support

GitHub – Source code & issue tracker
Discord – Join the community & chat with the developer
Ko-fi – Support development