Uploaded September 2025 | Updated September 2026, 1 week ago

---

The Copper Age is here - Minecraft 1.21.9 brings us the Copper Golem, Copper Armor and Tools, Shelves, new decorative copper blocks and much more. Here's the ultimate guide to all the news! #minecraftemployee

This guide was made for Minecraft Java Edition. Many new features and some smaller changes also apply to Bedrock Edition.

slicedlime works as a Tech Lead for Minecraft at Mojang, but the YouTube and Twitch channels are personal projects run entirely in his spare time. This is an unofficial update video that aims to be the most comprehensive guide possible. Official announcement: minecraft.net/en-us/article/minecraft-java-edition-1-21-9

Technical News: youtu.be/jcE-KOlGh_I

Introduction: 0:00
Copper Golems & Copper Chests: 0:16
Copper Equipment: 5:20
Copper Blocks: 6:37
Shelves: 8:08
The End: 9:54
Spawn Chunks: 10:31
Gameplay: 11:00
Visuals: 12:21
Game Rules: 13:12
Mobs: 13:49
Multiplayer: 14:18
Options: 14:43
User Interface: 17:05
Sounds: 19:25
Technical News: 20:00
Thank You: 20:34

Thank you to the helper crew! Bl4ckscor3, EpicGamerX125, JochCool & Magnar Akatsimi

Intro Music: "Maiden Voyage" by Laura Platt (tinyurl.com/4vmjun7s)

Music by Dye O (tinyurl.com/5n7srfyw):
- Waterworks
- Pigmented
- Wash Me Away
- Sail

--

Leave me a comment, or find me elsewhere:
Second channel: youtube.com/@LimeUncut
Outdoors channel: youtube.com/@limeoutdoors
Twitch: twitch.tv/slicedlime
Twitter: twitter.com/slicedlime
Bluesky: https://bsky.app/profile/slicedlime.bsky.social
Fediverse: https://mastodon.gamedev.place/@slicedlime
Facebook: facebook.com/SlicedlimeYT
Patreon: patreon.com/slicedlime
Discord: discord.gg/aFAnsdv

#minecraft #news