MNS - Moog's Nether Structures in All the Mods 10

MNS (Moog's Nether Structures) adds new structures to the Nether. They are built from vanilla blocks and entities, so they keep the vanilla feel while giving you new loot, tough enemies and fun challenges to find as you explore.^[1]

It works on its own, and it also pairs with the same developers' main structure mod, MVS. It can be installed server-side only too.^[1]

In this pack

This pack ships MNS version 3.1.1 (the MoogsNetherStructures-universal-1.21-3.1.1 jar). It was first included in version 1.7 of the pack or earlier, so it has been around for a while.^[2]

Customizing it

Every aspect of the mod can be customized with datapacks. The mod's authors offer a config pack template with full instructions. The sources don't show any changes this pack makes to the mod's defaults, so I won't claim any.^[1]

Same as in the All the Mods 10 8.1 guide

Good news: there's nothing to craft before you start with this mod. Moog's Nether Structures adds new structures to the Nether, so your first step is simply to head into the Nether and explore.^[1][3]

Out there you'll find new loot, tough enemies and fun challenges. The structures are built from vanilla blocks and entities, so they keep the vanilla feel of the game.^[1][3]

What to do first

1. Get ready for the Nether the way you normally would, because the mod's enemies are described as tough.^[3]
2. Go through a Nether portal and explore. The new structures generate in the Nether dimension, so you find them by exploring rather than by crafting anything.^[3]
3. Open the chests and take on the challenges you come across. The loot is the main reward for exploring.^[1][3]

If you rarely see structures

The mod has a universal rarity setting that multiplies the spacing of every one of its structures. Higher values make them rarer and lower values make them more common. There is also a per-mod rarity setting that multiplies the spacing of every structure from a given mod.^[4]

The mod works on its own or alongside its sister structure mod, MVS. It can also be installed server-side only.^[1][3]

Unverified No recipes, items or quests from this mod are confirmed in this pack, so there is no crafting order to follow. Any pack-specific changes to structure rarity or loot are also unverified.

This mod adds structures to the Nether, so there are no machines, power or fluids to manage here. What matters is how structures are placed and what is built into them: spawners, pillars, trial spawners, vaults and loot. Everything below comes from the mod's own data files as they ship in the pack.^[1][3]

Where structures generate

Each of the first three bridge structures has its own structure set with a weight of 1. All three use the same placement type, with a spacing of 90 and a separation of 70. Only the salt differs, so the three bridges don't line up on top of each other.^[5][6][7]

The mod also ships biome tags that say which biomes a structure may appear in. There is one for the whole Nether, and others for crimson forest, nether wastes, soul sand valley and warped forest. The nether wastes tag also lists an optional Magma Wastes biome from another mod.^{[8][9][10][11][12]}

• Any Nether biome: the tag points at the vanilla Nether biome tag.^[9]
• Crimson forest: crimson forest only.^[8]
• Nether wastes: nether wastes, plus Magma Wastes if that biome is installed.^[10]
• Soul sand valley: soul sand valley only.^[11]
• Warped forest: warped forest only.^[12]

Randomized spawners

Structure spawners are not fixed. A spawner randomizing processor picks the mob from a weighted list when the structure generates. Every list also sets the spawner timings. Most use a spawn delay of 200 to 800, a spawn count of 4, at most 6 nearby entities, a player range of 16 and a spawn range of 4.^{[13][14][15][16]}

These are the weighted mob lists in the processor lists I could see. A higher weight means that mob is picked more often.^{[13][14][15][16][17][18][19][20][21][22]}

• Arena pillars: blaze 5, magma cube 3, wither skeleton 1.^[17]
• Dragon arena pillars: wither skeleton 6, blaze 3, magma cube 3. Faster than most, with a delay of 150 to 600, a spawn count of 5 and up to 8 nearby entities.^[18]
• Large arena pillars: wither skeleton 3, skeleton 2.^[19]
• Large house spawners: wither skeleton 2, blaze 2, piglin brute 2, piglin 1.^[14]
• Nether brick circle spawners: piglin brute 1, piglin 1.^[13]
• Small arena spawners: zombified piglin 5, magma cube 3, skeleton 2. Slower and gentler, with a delay of 250 to 900, a spawn count of 3 and up to 4 nearby entities.^[22]
• Pillars: wither skeleton, blaze and skeleton, all at weight 1.^[21]
• Blaze pillars: blaze only.^[20]
• Piglin spawners: piglin only. Wither skeleton spawners: wither skeleton only.^[15][16]

Pillars

Some structures stand on long supports that are generated for them. A pillar processor looks for a marker block, replaces it, and builds a column in a set direction and length. In the arena lists the column goes down for 128 blocks from an orange stained glass marker. It is mostly deepslate, with a 0.35 chance of Magma Block (with a max_y of 32) and a 0.2 chance of cobbled deepslate.^[17][18][19]

The pillars and blaze pillars lists use the same downward column, triggered by red stained glass. They add a second column going up for 60 blocks, where lime stained glass markers become chains. That is how the hanging chains on those structures are made.^[20][21]

Trial spawners, vaults and loot

The two big arenas go beyond ordinary spawners. The dragon arena and large arena lists both run a trial spawner randomizing processor, each with its own normal and ominous config. They also run a vault randomizing processor with a main loot table and a separate ominous one. So the ominous versions give different rewards, not just tougher fights.^[18][19]

The pillars and blaze pillars lists also swap loot. The mod's own mega fortress chest table is replaced with the vanilla Nether fortress chest table, and the seed is randomized each time.^[20][21]

Unverified The sources don't say which structure uses which processor list or biome tag. The structure files that would show this were too long to include, so I can't tell you which mobs or rewards a given structure uses.

The mod's progression shows up in its chest loot, so the clearest way to see the tiers is to compare the loot tables of its structures. At the low end are the intact mega fortress chests. At the top is the dragon arena's epic chest.^[23][24][25]

Tier 1: intact mega fortress

The main intact mega fortress chest is basic early-game loot. Its first pool rolls 4 to 7 times and draws from Gold Ingot, Iron Ingot, Nether Brick, Quartz, Golden Horse Armor, Iron Horse Armor and Saddle.^[25]

Its second pool rolls 5 to 9 times and is mostly supplies: Bread, Golden Carrot, Coal, Torch, Flint And Steel and a rare Chainmail Helmet.^[25]

There is also a leaner base chest. It rolls 2 to 4 times for gold, iron, nether bricks, a saddle, golden horse armor and flint and steel. A second pool rolls 3 to 5 times for Obsidian, golden carrots, Mushroom Stew and torches.^[24]

Top tier: dragon arena epic chest

The epic dragon arena chest is a big step up. Its first pool rolls 1 to 2 times for Netherite Ingot, Netherite Scrap (2 to 4 at a time), Ancient Debris (1 to 3 at a time), Diamond Block, Netherite Upgrade Smithing Template and Heavy Core.^[23]

A second pool rolls 2 to 3 times for randomly enchanted diamond gear: sword, axe, chestplate, leggings, helmet and boots. The same pool can also give an enchanted bow or crossbow.^[23]

A third pool, also 2 to 3 rolls, gives building and trade materials: Diamond (4 to 8 at a time), Emerald Block, Gold Block, Crying Obsidian and Gilded Blackstone.^[23]

A fourth pool rolls 1 to 2 times for enchanted books, Wind Charge (4 to 8 at a time), Enchanted Golden Apple (1 to 2 at a time), a Totem Of Undying and the music discs Music Disc Pigstep and Music Disc Creator.^[23]

What is not confirmed

Unverified The mod has more loot tables, including other dragon arena, large arena and mega fortress variants. Their contents are not covered here, so this page does not rank them between the two tiers above.

All the Mods 10 8.2 ships MNS - Moog's Nether Structures 3.1.1. The mod has been in the pack since All the Mods 10 1.7 or earlier, and it has changed a fair bit since then.^[2]

In the pack changelogs

• All the Mods 10 2.37: updated from 1.0.7-1.21 to 1.0.8-1.21.^[26]
• All the Mods 10 4.7: the mod was removed.^[27]
• All the Mods 10 4.13: the changelog lists the mod as removed again. The pack changelogs don't say why.^[28]
• All the Mods 10 6.1: the mod was added with version 2.0.31.^[29]

In the mod's own changelogs

• 1.0.3-1.21: updated for 1.21.1.^[30]
• 1.0.8-1.21: removed large_house_1. This is the version the pack moved to in 2.37.^[26][31]
• 1.21-2.0.0: moved to the new MoogsStructureLib system. Structure type references and the placement algorithm moved from the mns namespace to the moogs_structures namespace.^[32]
• 1.21-2.0.1: the netherite block in the copper tower was replaced and the copper tower was made rarer. Most wither skulls in "grave_yard" and "circle_blackstone" became skeleton skulls.^[33]
• 2.0.4: empty barrels in the nether structures now contain loot. Fixes: very small nether brick ruins generate correctly, chain blocks no longer break in the giant skull, large house, smoking shrine and train on 1.21.9+, and piglins and piglin brutes in the medium houses use the new 1.21 item format.^[34]
• 2.0.31: a hotfix that made the nether tower and nether wart farm much rarer. This is the version the pack added in 6.1.^[29][35]
• 3.0.0: the big one. It added the Mega Fortress (207 pieces, packed with loot, mobs and traps), plus three arenas: the Dragon Arena, the Large Arena and the Small Arena. It now requires Moog's Structure Lib v3.0.0 or newer.^[36]
• 3.1.1: added Minecraft 26.3 support. This is the version in All the Mods 10 8.2.^[2][37]