Umbrial — The Eternal Twilight

Umbrial adds Umbria, a new dimension frozen in a never-ending sunset. The world is divided into zones of Light and zones of Shadow, and every zone changes the crystals, plants, creatures and loot you will find there.

Build a portal, step through, and master both sides of the twilight.

Features

🌌 A new dimension

• Rolling violet hills built from entirely custom blocks: Umbrian Grass, Dirt, Stone and Brick.
• Light and Shadow zones that alternate in large patches and change the terrain, flora and fauna.
• Giant glowing crystals, ruined brick pillars, floating motes and ambient sounds that give the dimension its atmosphere.
• Custom trees (golden Light trees, tall violet Shadow trees), plants, flowers and glowing mushrooms.

🚪 Portal

• Craft Umbrian Frames and the Twilight Key, build a rectangular frame (just like a Nether portal, sizes up to 21x21) and light it with the key.
• Portals link back and forth between the Overworld and Umbria.

⛏️ Ores, tools and gear — two families

Mine Light Ore and Shadow Ore, forge Light and Shadow ingots and craft a full set for each family:

🌗 Twilight gear — power that follows the day

Defeat the final boss to obtain Twilight Essence and forge the best equipment in Umbria. Every piece has two powers, Day and Night, and its texture changes with the phase. In Umbria, Light zones count as day and Shadow zones as night.

• Sword: Day sets enemies on fire and unleashes a flash of light; Night drains life and backstabs hard.
• Pickaxe: Day smelts ores and mines faster; Night tears out entire veins.
• Shovel / Axe / Hoe: 3x3 digging and tilling, whole-tree felling, doubled wood and doubled crops.
• Armor: water breathing, fire resistance, no fall damage, invisibility while sneaking, and a full-set aura that burns undead by day and reflects damage by night.

🏰 Dungeons and the Twilight Castle

• Sanctuary of Light and Crypt of Shadow dungeons, guarded by crystal Sentinels and Stalkers coming out of spawners.
• A huge Twilight Castle: a six-floor keep that transitions from Light to Shadow as you climb, with chests on every floor.
• Reach the top and face the Twilight King, a two-phase boss with Wither strikes, a shockwave pulse and summoned guardians. Bring a bow and good armor!

🦌 Creatures

• Lumideer — a peaceful, glowing-antlered fawn that lives in Light zones. Breed it with Light Flowers.
• Lumifly — a pulsing luminous insect. Swarms synchronise their glow! Catch them in bottles to make decorative, light-emitting jars.
• Light Sentinel and Shadow Stalker — crystal guardians of the dungeons.
• Twilight King — the final boss.

🧪 Food, potions and more

• Lumideer meat, Shadow Mushroom Stew, Light Flower Nectar, Dawn and Penumbra fruits.
• Potion of Dawn (night vision + regeneration) and Potion of Penumbra (invisibility + resistance), also as splash, lingering and tipped arrows.
• Shadow Pearl: a teleporting pearl with no fall damage.
• In-game guide book (Umbria Guide): craftable, with chapters, recipes and tips for everything above.

Getting started

1. Craft an Umbrian Frame (obsidian + glowstone dust + lapis lazuli) and a Twilight Key.
2. Build the portal and light it with the key.
3. Craft the Umbria Guide book to follow the progression.

Commands (cheats required): /umbria tp toggles between the Overworld and Umbria, /umbria castle teleports you to the nearest Twilight Castle.

Requirements

• Minecraft 1.12.2
• Minecraft Forge for 1.12.2

Notes

• Structures, dungeons and vegetation only generate in newly generated chunks. Explore new areas or create a new world.
• Please report bugs and suggestions in the Issues tab / comments.