Eaglercraft 1.20 clients often support plugins via injected JavaScript. Here's a simple HUD overlay piece that shows your coordinates in-game:
// Eaglercraft 1.20 HUD Overlay Piece // Inject this after the client loads(function() Z: 0'; document.body.appendChild(overlay);
// Hook into client's player position (requires client internals) setInterval(() => if (window.game && window.game.player) Y: $Math.floor(pos.y) , 100);
)();
Title: [Release] Eaglercraft 1.2.0 Client - The "Better Together" Web Port Tags: Eaglercraft, Minecraft 1.12.2, Web Client, Port, Release eaglercraft 120 client
Why should you play the 1.2.0 Client?
In vanilla Eaglercraft, if you closed the browser tab hosting a LAN world, the world was gone. The 120 Client introduces IndexedDB auto-save. Your local worlds are saved to your browser's internal database, allowing you to host a server, close the laptop, and resume the exact same session the next day. Eaglercraft 1
The client is only half the story. You need servers that support the 120 protocol extensions. As of 2025, three major networks support the Eaglercraft 120 Client natively:
To connect, simply copy the server IP, click "Multiplayer," then "Direct Connect," and paste. Title: [Release] Eaglercraft 1
The Eaglercraft 1.2.0 client was a marvel of reverse engineering. It utilized a patched version of the official Minecraft 1.12.2 client (and later updates), converted into JavaScript via TeaVM.
What made the 1.2.0 client special was its architecture regarding multiplayer. Earlier versions relied on a specific "Eaglercraft protocol." If a server didn't support that specific protocol, you couldn't join. The 1.2.0 update introduced more robust proxy systems, allowing the web client to connect to standard Minecraft servers with greater stability. It mimicked the behavior of a legitimate Java client so effectively that it could often bypass anti-cheats that would usually block non-standard clients.