While there is no "official" 1.21 Eaglercraft release yet, several community members have claimed to create unblocked versions that support features like the new 1.21 items
: You can join dedicated servers by adding wss:// URLs in the multiplayer menu. Where to Find It eaglercraft 121 unblocked exclusive
Searching for the official developer's blog or documentation can provide the most accurate information regarding which features from the 1.21 update are currently supported in a browser environment. Minecraft 1.21.114: Spear Item Tutorial 20 Oct 2025 — While there is no "official" 1