Copper Age Backport Mod for Minecraft 1.20.1, 1.21.1

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