Eternal Starlight Mod Guide: Dimension, Bosses, Materials & Progression

Overview

Eternal Starlight is a dimension mod centered around a single mysterious portal destination: the Starlight Dimension. This alien realm features over a dozen distinct biomes, seven custom wood types, a full set of dimension-exclusive ores, two major bosses with custom fight mechanics, and a cast of unique mobs ranging from tameable flying moths to skeletal warriors with throwable blades.

Progression runs from crafting a Seeking Eye and opening the portal, through defeating two bosses in the Golem Forge and Cursed Garden structures, to synthesizing endgame Unrealium alloy and wielding Starlit Diamond gear. The mod also introduces a spell system powered by Mana Crystals and a suite of unique weapons not found in vanilla Minecraft.

Browse every item and crafting recipe using the Items and Recipes tabs at the top of this page. This guide focuses on progression, mechanics, and the content you need to know to get the most out of the mod.

Portal Ruins and The Gatekeeper

Portal Ruins are the first contact point with this mod. The five variants spawn across different overworld biomes, making them reasonably common to find naturally or while traveling. Each ruin contains the same core structure: a dormant portal frame and a Gatekeeper spawner.

Fighting the Gatekeeper

The Gatekeeper is a boss-tier encounter even before the dimension opens. His most dangerous attack is the meteor drop — he summons rocks from above that deal heavy impact damage while you are already managing melee range. Watch for any falling-rock particle effects and sidestep immediately. His ground slam creates a shockwave in a radius around him; jumping at the moment of impact reduces damage taken.

He also performs a forward dash stab and rapid slash combos at close range. Staying at mid-range is the safest position. Shield blocking reduces most of his melee damage. Once his health drops low enough he concedes, dropping a Loot Bag rather than dying outright. The bag contains the Orb of Prophecy (required to enter the dimension), the Glimmering Tablet, Seeking Eyes, and armor trim smithing templates exclusive to the mod.

Biomes of the Starlight Dimension

The Starlight Dimension spawns players in the Starlight Forest, a purple-canopied woodland with Glowing Mushroom trees, Starlight Flowers (used for Seeking Eyes), and underground Spring Stone lakes. The dense variant shares the same trees but with tighter foliage and more ground cover. These are the most beginner-friendly biomes for establishing a base.

Starlight Permafrost Forest

A frozen biome with tall Northland trees and glowing flowers. Its real value is underground: Glacite crystals grow only in the caves beneath this biome. Mining these giant crystals provides Glacite Shards for freeze-resistant armor and the Glacite Shield, one of the few shields that can freeze attacking mobs. The Permafrost boss also spawns in this biome's depths with 120 HP (60 hearts).

Dark Swamp

A purple-tinted mangrove-like biome. Deepsilver ore spawns in the mud layers here, making this an important early farming location. Pungency Fruit Vines grow naturally from tree canopies — harvesting Pungency Fruit is essential for the Pungency Fruit Spear upgrade. The Shimmer Lacewing insect and the neutral Stranghoul Den structure also appear in and around this biome.

Crystallized Desert

A stark landscape dominated by Red and Blue Starlight Crystal clusters. These crystals are essential for crafting elemental spell Crystals and the Orb of Prophecy. The Thirst Walker hostile mob patrols the desert and drops the Tooth of Hunger, used to craft the living Dagger of Hunger. Twilight Sand can be shaped into a full set of Twilight Sandstone building blocks.

The Abyss

The deep-ocean equivalent of the dimension, found underwater. Luminofish and Luminaris spawn here and can be collected in buckets for home aquariums. Abyssal Fruit grows in the Abyss and is needed to breed Aurora Deer. The Twilight Gaze mob also inhabits this biome — it drops nothing but is visually striking with its glowing purple eyes.

Underwater Biomes

The Starlit Sea, Spiral Kelp Forest, and Lush Shallow Sea cover the ocean floor. Rookfish spawn in these waters and provide Rookfish Air Sacs, which combine with Amaramber to create the Air Sac Mask and Air Sac Boots — the mod's primary underwater breathing and swim speed equipment. Each underwater biome also yields plant types used in elemental Crystal crafting.

The Golem Forge

The Golem Forge is an underground structure located deep beneath the surface of the Starlight Dimension. On the surface it is marked by large circular rings of Voidstone, clearly visible from a map or high vantage point. Throwing a Seeking Eye while holding Redstone in your off-hand will direct you toward it. Drop through the Voidstone opening and descend to reach the forge chamber.

Defeating the Starlight Golem

The Starlight Golem cannot be damaged while his shield is active. Energy beams connect him to nearby Generator blocks throughout the forge. Right-clicking each Generator disables it and makes the Golem vulnerable for a short window. You must disable all generators quickly and deal as much damage as possible before they recharge. Repeat this cycle through multiple phases.

His most dangerous attack is the light beam — when his arms rise, run immediately. No armor or shield blocks this attack effectively, and it deals enough damage to eliminate most players outright. His other attacks include a combustion eruption (watch for smoke particles forming before the burst) and a ground slam that sends shockwaves across the floor.

Rewards

Defeating the Golem awards a Loot Bag containing Oxidized Golem Steel Ingots (smelt them to get usable Golem Steel Ingots), Thermal Springstone, Spectral Arrows, Seeking Eyes, the Forge Armor Trim Smithing Template, and rare uncraftable weapons including the Glistering Sword. Custom loot chests throughout the forge also contain building blocks, food, and dimension-specific materials worth collecting before leaving.

The Cursed Garden

The Cursed Garden is an enormous underground maze — one of the largest structures in the mod. Throw a Seeking Eye while holding Lunar Berries in your off-hand to locate it. The maze is filled with loot chests containing high-value materials and equipment. Explore it thoroughly before engaging the boss; there is genuinely excellent gear inside.

Defeating the Lunar Monstrosity

The Lunar Monstrosity takes absolutely no damage from normal attacks. You must deal fire damage to expose its vulnerability — a Fire Aspect sword or flaming arrow is required before any hits will register. Without this, every attack displays zero damage regardless of your weapon or enchantments. Once ignited, it takes normal damage.

The boss fights alongside the Tangled Hatred, a large tentacle that extends from the floor. Hit it to eliminate it — it tracks independently and deals significant slam damage. The Lunar Monstrosity also launches Plunge Bombs (explosive projectiles), creates ground thorn fields that deal massive damage on contact, and will crawl underground and burst up beneath you. In Phase 2 it fires shockwaves continuously to prevent you approaching.

If you drop to low health during the fight, retreat into the maze tunnels. The Lunar Monstrosity and the Tangled Hatred cannot reach players inside the narrow corridors, giving you time to recover. The boss's Tangled guardian mobs are not particularly dangerous and can be ignored.

Rewards

The Lunar Monstrosity's Loot Bag contains the Chain of Souls (an endgame whip-type weapon), the Wand of Teleportation (creates a damage field around the player), the Moonring Bow (summons ground thorns on firing), Tenacious Vines (used in the Wilted Crossbow recipe), Soul Dew, raw ingots, and a Music Disc. The Tangled Hatred mini-boss drops Tenacious Petals needed for Petal-tier weapons.

Materials and Resources

The Starlight Dimension introduces a complete material progression chain spanning early exploration through post-boss endgame. Each material tier unlocks new equipment, building blocks, and crafting options.

Deepsilver

The dimension's primary early ore, found in Grimstone, Voidstone, Eternal Ice, Haze Ice, Nightfall Mud, and Packed Nightfall Mud layers. Deepsilver tools have 800 durability and mine at speed 12 — notably faster than Diamond. Deepsilver armor (total 15 armor points, 0.5 toughness) grants a passive speed boost and knockback resistance, making it excellent for mobile combat.

Thermal Springstone

Smelt Thermal Springstone ore to get Thermal Springstone Ingots. Thermal Springstone armor (16 total armor points) reduces fire damage and causes the wearer to combust nearby mobs, making it excellent for lava and Nether environments. The Thermal Springstone Hammer deals 10 damage (5 hearts) per hit at the cost of a slow attack speed — one of the highest single-hit damage values before endgame gear.

Thermal Springstone is the base material for Smithing Table upgrades to the Starfire tier. Use the Starfire Upgrade Smithing Template (dropped by the Starlight Golem) and Starfire material to upgrade Thermal Springstone weapons and tools into their Starfire equivalents, which have 1000 durability and deal higher base damage.

Glacite

Glacite Shards are mined from giant Glacite crystal formations in Permafrost caves — very rare to find but a single crystal provides enormous quantities. Glacite armor (17 total armor points) provides freeze resistance and is the primary counter to Freeze mobs. Glacite weapons freeze enemies on hit. The Glacite Shield can freeze attacking mobs to death and is the strongest shield in the mod. Glacite tools are fragile (500 uses) and not worth crafting for daily mining.

Amaramber

Raw Amaramber drops from stripping Torreya Logs — Fortune enchantment on an axe significantly increases the drop chance. Amaramber armor is limited to the Mask and Chestplate slots and provides weak protection (14 total armor across full set). Its main value is crafting: the Amaramber Mask can be converted into an Air Sac Mask for underwater breathing, and Amaramber is used to craft torches, candles, and a wide variety of decorative blocks.

Golem Steel

Oxidized Golem Steel Ingots drop from the Starlight Golem boss. Smelting them in a furnace produces usable Golem Steel Ingots. Golem Steel has 1000 durability and mines at speed 7.5. Its greatsword, the Golem Steel Greatsword, has a wide sweep arc that can hit multiple enemies simultaneously. The material also weathers like copper (oxidized, waxed variants exist) and produces an extensive decorative block family.

Starlit Diamond

Starlit Diamond Ore spawns in four stone variants (Grimstone, Voidstone, Eternal Ice, Haze Ice) across the dimension's caves. Smelt the ore to get Starlit Diamonds. With 2500 durability and 4.0 attack damage bonus (sword deals 7 damage / 3.5 hearts), it surpasses vanilla Diamond in both durability and damage. Starlit Diamond armor has 20 total armor points and 3.0 toughness — the highest toughness value in the mod.

Unrealium (Endgame Alloy)

Unrealium is the top-tier material in the mod, synthesized in the Alloy Furnace from Deepsilver Ingot, Golem Steel Ingot, Malarite, and Soul Dew. It cannot be found as an ore. With 1200 durability and a mining speed of 15 (the fastest tool tier in the mod), Unrealium tools outpace everything else. Unrealium armor ties Starlit Diamond at 20 total armor points. The Unrealium Crossbow is a unique ranged weapon.

Malarite and Saltpeter

Malarite is an ore found in Grimstone, Voidstone, and Nightfall Mud cave layers. It produces fast melee weapons with no armor tier. Malarite Arrows inflict Poison on hit — extremely useful for sustained damage. Malarite is also a required component for Unrealium alloy. Saltpeter Powder smelt from four ore variants and serves as both a crafting material (Saltpeter Matchbox = flint-and-steel alternative) and a powerful fuel source, smelting 8 items per piece.

Aethersent

Aethersent is obtained by killing Creteor mobs during a meteor shower event. The Aetherstrike Rocket item triggers a meteor shower on demand. Aethersent armor (19 total armor points, highest enchantability at 35) grants a Meteor Counterattack: when the wearer takes damage, meteors fall on nearby enemies, dealing area damage. Aethersent also produces the Starfall Longbow, a powerful ranged weapon made from Creteor Hide and String.

Unique Weapons and Combat Tools

Eternal Starlight introduces multiple weapon categories not available in vanilla Minecraft: Greatswords, Spears, Scythes, Hammers, Boomerangs, Whips, and a Chain weapon. Many of these are exclusive to this mod and have unique attack patterns.

Greatswords

Greatswords have a wide horizontal sweep attack that hits multiple mobs simultaneously, trading speed for area coverage. The Golem Steel Greatsword (1000 durability, 3.0 damage bonus) is the primary craftable greatsword. The Moonring Greatsword — a boss drop — combines both a melee attack and a block mechanic, functioning as a sword and shield simultaneously. The Crystal Greatsword and Glistering Greatsword are uncraftable drops with very high durability.

Spears

Spears are thrown weapons that can be retrieved. The Malarite Spear can be upgraded with Pungency Fruit at a Smithing Table using the Pungency Fruit Upgrade Template to create the Pungency Fruit Spear, which applies Nausea and the Teary effect on hit. The Crescent Spear is a boss-loot weapon that permanently has the Riptide ability — it launches the player at high speed in any weather condition, not just storms.

Specialty Weapons

The Shattered Sword drops from the Lonestar Skeleton and has a detachable blade: throw the blade at an enemy and right-click the handle to call it back, similar to a Loyalty trident. The Dagger of Hunger is crafted from the Tooth of Hunger and needs to be fed kills — neglect its hunger too long and it starts draining the player's own health. The Energy Boomerang returns to the thrower on impact and can be enchanted with Homing to track nearby enemies.

Ranged Weapons

The Wilted Crossbow fires in a pendulum arc that skewers any mob along the projectile's path, making it ideal for hitting targets in a line without careful aiming. The Starfall Longbow has a chance to trigger a meteor shower on firing. The Moonring Bow causes thorns to erupt from the ground at the target's location, dealing continuous damage to anything touching them. The Seeds Launcher fires a spread of seeds that can be enchanted to ignite or freeze targets.

Mobs and Companions

Tameable and Summonable

The Crystallized Moth (20 HP) is a flying tameable mob found across most biomes. Tame it with raw meat (it is carnivorous). Once tamed you can ride it, fly it, and weaponize its sonar attack — the Crystallized Moth's Shivering Gel drop also crafts the Sonar Bomb, a thrown weapon that emits a damaging sonar burst on impact. The Yeti (20 HP) is passive but drops colored Yeti Fur in 16 dye variants, which crafts dimension-specific colored Beds and Carpets.

The Grimstone Golem is summoned by placing a Carved Lunaris Cactus Fruit on top of a Grimstone Brick structure. It does not fight but can carry a full stack of blocks, reducing storage burden while building. The Aurora Deer (20 HP) is passive, breedable with Abyssal Fruit from the Abyss biome, and drops Cooked Aurora Deer Steak — the best food source in the dimension for players who settle in the Permafrost Forest.

Hostile Mob Drops

The Nightfall Spider (10 HP, 2 damage) drops Nightfall Spider Eyes, combined with Soul Dew to craft the Soulit Spectator — a thrown item that creates a viewpoint at a distance, useful for scouting. The Lonestar Skeleton (20 HP, 3.2 damage) uses a throwable blade as its primary attack and may drop the Shattered Sword on death. The Thirst Walker (40 HP, 4.5 damage) is the neutral guardian of the Crystallized Desert and drops the Tooth of Hunger needed for the Dagger of Hunger.

The Tangled (20 HP, 5 damage) inflicts Poison on hit and upon death may spawn a Tangled Skull, which chases and explodes nearby. Destroy the skull quickly after it separates for a chance to receive it as a throwable weapon. The Freeze mob (15 HP) guards the Golem Forge and drops a Frozen Tube on death, which freezes any hostile mob it hits. Gleech mobs drop eggs that, when thrown, hatch and infect struck mobs.

Passive Wildlife

Ratlin critters (15 HP) flee on approach and drop Ratlin Meat and occasional Cave Moss. Shadow Snails (8 HP) curl into their shell when attacked, becoming extremely resistant to damage (withstanding multiple Netherite sword hits) before dying. Their drops include Shadow Snail Shell Powder, used as Black Dye, and Cooked Shadow Snail Meat for cooking recipes. Starfire Birds live in Starfire Bird Aviaries, which can be crafted from any wood type combined with Starfire.

Spells and the Orb of Prophecy

The Orb of Prophecy serves dual purposes: it activates the Starlight Portal and acts as the casting tool for the mod's spell system. With the Orb in your main hand and a charged Mana Crystal in your inventory, right-clicking releases the active spell. Spells are selected via a hotkey (default: I) that cycles through equipped crests.

The Blazing Beam is currently the primary functional spell. Obtained by receiving the Blazing Beam Crest from the Starlight Golem's loot bag, it requires a Blaze Crystal in your inventory as fuel. The Blazing Beam fires a sustained energy beam nearly identical to the Golem's own light beam attack — it can eliminate any mob regardless of health. Hold right-click to charge the beam before releasing.

Mana Crystals fuel all spells and are crafted from six elemental Crystals: Terra, Wind, Water, Lunar, Blaze, and Light. Each elemental Crystal is crafted from Red Starlight Crystal Shards (from the Crystallized Desert) combined with a specific ingredient — Dirt for Terra, Wind Charge for Wind, Ice for Water, and so on. Stocking up on Red Starlight Crystal Shards early makes spell crafting sustainable throughout the playthrough.

Food and Consumables

The dimension adds over a dozen food items. Cooked Aurora Deer Steak is the best sustainable food source, obtained by breeding and farming Aurora Deer in the Permafrost Forest. Rookfish Skewer combines Cooked Rookfish with Sticks and provides solid restoration. Bouldershroom Stew (Bouldershroom + Glowing Mushroom + Bowl) and Crinoa Porridge (three Crinoa + Bowl) are crafted foods available in cave biomes.

Pungency Fruit grows on vines in the Dark Swamp and can be eaten, but causes negative stomach effects. Its primary purpose is weapon crafting — the Pungency Fruit Spear combines Malarite's speed with Pungency's ability to inflict Nausea and the Teary effect. Shadow Snail Pie and Shadow Escargot are cooked crafting recipes using Shadow Snail Meat and Shells from the common Shadow Snail mob.

Several items have dual uses as food and crafting materials. Lunaris Cactus Fruit from the Crystallized Desert can be carved into lanterns or eaten. Crinoa (a grain-like plant) crafts into Crinoa Balls (food) or is used to pack Nightfall Mud into building blocks. Raw Amaramber obtained from Torreya Logs is used in waxing Golem Steel blocks as well as in cooking.