The End: Expanded

The mod changes the End Islands by adding six new End biomes and eight new End structures, not counting variants, and by introducing six End mobs that fill niches vanilla Minecraft does not have. Main Island is revamped, which changes the Ender Dragon fight. The author describes the mod as still under heavy development with many glitches, so players should expect unfinished parts.

Alongside the End content, the mod adds a large set of decorative building blocks, including Chorus Wood blocks and Purpur-style walls, plus cracked End Stone Bricks. End Stone can be used to craft stone tools. A new miniboss, a new fluid called Ender Honeydew, and redstone blocks such as Instant Honeydew TNT round out the additions. The mod is client and server, so the server and every player need it on NeoForge 1.21.8.

The author notes it works with many other End mods and suggests adding further mods for more immersion. The files are for NeoForge 1.21.8 only, and the license is All rights reserved, so the code is not open source.