Formations Overworld

Overview

Formations Overworld adds 30 new structures to the Overworld, spread across forests, deserts, jungles, snowy biomes, oceans, and more. Unlike many structure mods that dump massive dungeons into the world, Formations Overworld focuses on smaller, natural-feeling additions that blend into the landscape. You'll stumble across abandoned Campsites, crumbling Tower Remnants, underground Hobbit Holes, and elaborately trapped Witch Towers as you explore.

The mod doesn't add any new blocks, items, or mobs. Every structure is built from vanilla blocks and stocked with vanilla loot, which means it's compatible with virtually any modpack and any Minecraft version it supports. Structures use biome-adaptive block replacement, so a Small House in a Taiga will use Spruce Wood while the same design in a Plains biome uses Oak. Many structures also feature aging effects that randomly crack, mossy, or weather their blocks to make them feel like they've been there for centuries.

You can browse all structures and details using the tabs on this page. This guide covers where each structure spawns, what rarity tier it falls into, and what loot you can expect to find.

Structure Rarity Tiers

Every structure in Formations Overworld belongs to one of three rarity tiers that control how frequently and how far apart they generate. The spacing value is the average distance between structures in chunks (1 chunk = 16 blocks), and the separation is the guaranteed minimum distance. Understanding these tiers helps you know how far to travel when hunting for specific structures.

Forest, Plains & Temperate Structures

The bulk of Formations Overworld's content spawns in temperate biomes. If you stick to Forests, Plains, Meadows, Taigas, and Savannas, you'll encounter the widest variety of structures. Here's what to look for.

Tiny House & Small House

The most common residential structures you'll find. Tiny Houses are single-room cottages with basic supplies: Bread, Apples, Wheat, and Sticks. They occasionally contain an Enchanted Book. Small Houses are more elaborate with multiple rooms. Intact houses have food and basic enchanted gear, while degraded variants have been partially destroyed and contain cobwebs and fewer items. Some Small Houses have a fireplace room with Coal, Torches, and Blaze Powder. Both come in multiple design variants and adapt their wood type to the local biome.

Hobbit Hole

One of the more charming structures, Hobbit Holes are partially buried houses dug into hillsides. They have two loot categories: a common chest with farming supplies, Seeds, Potions, and occasionally Music Discs or enchanted gear, and a food storage area stocked with Cooked meats, Bread, Golden Apples, and other provisions. Hobbit Holes also feature Brewing Stands that may contain partially brewed Potions and Chiseled Bookshelves with random Books.

Stone Tower

Tall stone structures found in mountainous, forested, and savanna regions. Stone Towers are multi-story buildings with a bedroom, a smithing room, and a basement. The bedroom contains assorted items including Music Discs, Maps, and Seeds. The smithing room is the real prize, holding Iron Ingots, Raw Copper, Coal, and a Smithing Table, plus a chance for enchanted armor, tools, and weapons. The basement has a hidden stash that may include Diamonds, Emeralds, Iron Nuggets, and even an Enchanted Book.

Campsite, Log Shelter & Log Spikes

These three structures tell the story of adventurers who came before you. Campsites are small clearings with a tent and campfire chest containing food, Torches, String, and basic supplies, with a rare chance for a Map, Spyglass, or Compass. Log Shelters are simple lean-to constructions with raw materials and basic tools. Log Spikes are defensive fortifications built from sharpened logs, containing Arrows, String, Bones, and occasionally enchanted weapons or tools. All three spawn exclusively in forest biomes.

Graveyard

Spooky burial grounds found in forest biomes. Graveyards come in three variants and feature three types of loot: tomb chests with Bones, Rotten Flesh, Iron Nuggets, and a chance for enchanted Iron equipment; regular grave chests with simpler loot; and trapped grave chests that reward bravery with Gold Ingots, Emeralds, and Diamonds. The trapped graves are worth seeking out if you're prepared for the danger.

Well & Fountain

Wells are simple water structures with a hidden chest at the bottom containing Iron Ingots, Diamonds, Golden Apples, and Emeralds. They come in two variants and are easy to overlook. Fountains are more elaborate, featuring a decorative water feature on the surface with hidden underground chambers beneath. Some chambers contain rich chests with Diamonds, Emeralds, Lapis Lazuli, and Enchanted Books, while others are trapped with Lava or TNT. Fountains use a pieced generation system, connecting multiple template sections together, making each one slightly different.

Other Temperate Structures

Several additional structures dot the temperate landscape. Small Statues are decorative constructions (4 variants) with a chest containing Emeralds, Gold Ingots, Iron Ingots, and Diamonds. Tower Remnants are crumbling ruins of former watchtowers (4 variants) with loot including Arrows, Wheat, Iron, and occasionally enchanted Shields or weapons. Copper Spires are tall decorative copper structures with no loot. Offerings are small ritual platforms found only in Forests and Plains with no chest loot. Farmland Fields are abandoned crop fields in Plains and Forests with randomized crop growth, providing free food without any chest loot. Wagons are abandoned merchant carts found in Taiga and Savanna biomes, containing Planks, Carpet, an occasional Enchanted Fishing Rod, and stacks of various Dye types. Stone Ore Spikes are natural-looking stone formations with exposed ore veins, perfect for early-game mining.

Meteor

Meteors are dramatic impact craters that spawn across nearly every Overworld biome type, including Forests, Badlands, Jungles, and Taigas. They come in two variants and are purely decorative, containing no loot chests. However, they create unique terrain features with exposed stone and craters that look striking in the landscape.

Desert, Jungle & Savanna Structures

Desert Houses

Sandstone dwellings exclusive to Desert biomes, with three design variants. Their chests contain a mix of desert-appropriate loot: Dead Bushes, Cactus, Wheat, Paper, Bread, Sticks, Compass, Map, and Saddles. They feature Chiseled Bookshelves and randomized Bed colors. A solid early-game find when traversing deserts.

Temples (Small, Mesoamerican & Large)

Formations Overworld adds three tiers of temple structures to Jungle, Savanna, and Desert biomes. Small Temples (2 variants) and Mesoamerican Temples (3 variants) are Uncommon and serve as atmospheric ruins with aging effects that crack and moss their stone blocks. They contain no loot chests but are great for photos and base building.

Large Temples are the prize. They're classified as Rare (50 chunk spacing), making them the second-rarest structures in the mod alongside the Witch Tower. Large Temples come in 4 variants and feature two loot tiers: pillar chests with Gunpowder, Emeralds, Gold Ingots, Lapis Lazuli, and Iron Ingots, and rich chests that can drop Diamonds, Golden Apples, and enchanted Diamond tools and armor. The rich chest also has a chance to contain a Totem of Undying and enchanted Tridents. These temples are well worth the search.

Bamboo Hut

Found exclusively in Bamboo Jungle biomes, the Bamboo Hut is a single-variant structure built from Bamboo blocks. Its chest contains Bamboo Planks, Bamboo items, Sugar Cane, Spider Eyes, and occasionally an Enchanted Fishing Rod. A nice thematic find but not particularly rewarding compared to other structures.

Snowy & Cold Biome Structures

Ice Castle

The largest and most visually impressive cold-biome structure. Ice Castles generate in Frozen Oceans, Snowy Plains, and Snowy Taigas. They come in two variants and are built entirely from ice blocks, packed ice, and blue ice. They contain no loot chests but make spectacular bases or landmarks. The terrain adjustment uses "beard thin" smoothing, meaning the castle sits naturally on the terrain rather than floating.

Ice Spire

Tall, narrow ice formations that jut up from the frozen landscape. Ice Spires spawn in Snowy Plains, Snowy Taigas, and Ice Spikes biomes. They're purely decorative with no loot, but they add dramatic verticality to flat snowy landscapes.

Igloo

Not to be confused with vanilla Igloos, these custom Igloos spawn in Meadows and Snowy Beaches. They feature randomized Bed colors and a cozy interior chest stocked with Snowballs, Packed Ice, Ice, Powder Snow Buckets, and Cold Resistance supplies. The second loot pool includes raw meats, Fishing Rods (sometimes enchanted), and Sweet Berries, making them useful survival stops in harsh snowy terrain.

Ocean & Special Structures

Raft

The only ocean structure in the mod. Rafts are small floating platforms that generate on the ocean surface, coming in three variants. They use the special Rafts rarity tier with 25 chunk spacing and 15 chunk separation, making them less common than most Uncommon structures but more common than Rare ones. Their loot is unique: instead of a fixed item list, each chest roll pulls from vanilla Minecraft's fishing loot tables. This means you can find fish, junk (Leather, Bowls, Sticks, String), or treasure items (Enchanted Books, Name Tags, Saddles, Enchanted Bows) just as if you were fishing.

Mushroom Hut

Exclusive to Mushroom Fields biomes, Mushroom Huts are whimsical structures built from mushroom blocks. With 9 design variants, they have the most visual variety of any structure in the mod. They contain no loot chests but provide shelter and a unique aesthetic. Finding all 9 variants is a fun challenge for completionists who enjoy exploring Mushroom Islands.

Cobble Hole

Found in Stony Peaks and Stony Shores, Cobble Holes are small underground cavities with a heavy aging effect (60% block degradation). Despite their humble appearance, they contain surprisingly good loot: Iron Ingots, Gold Ingots, and a chance for enchanted Iron armor and tools. They have two variants and sit 4 blocks below ground level, so you'll need to watch for partially exposed cobblestone patches on rocky terrain.

The Witch Tower

The Witch Tower is the crown jewel of Formations Overworld and one of only two Rare-tier structures. It generates in Forest, Jungle, and Taiga biomes with 50 chunk spacing, meaning you'll need to travel at least 640 blocks between possible spawn locations. It comes in two variants and is the most complex, dangerous, and rewarding structure in the entire mod.

Witch Towers are multi-story buildings with aging effects, plant growth, randomized Bed colors, Brewing Stands with potions, and Chiseled Bookshelves. They feature six distinct loot rooms, each with a different theme and loot table.

Best Loot by Structure

If you're hunting for specific loot, here's where to focus your exploration. The most rewarding structures are those with multiple loot pools and higher-tier items.

Structure Processors & Visual Effects

What sets Formations Overworld apart from many structure mods is its extensive use of structure processors that make each generated instance feel unique. Understanding these effects helps explain why the same structure type can look quite different each time you find one.

The Biome Replacement Processor swaps wood types, stone types, and vegetation to match the biome where the structure generates. The Block Age Processor randomly degrades blocks, turning Stone Bricks into Cracked Stone Bricks, adding Mossy variants, and introducing Cobwebs. Different structures use different aging intensities; for example, Small Houses have a mild 10% aging rate while Cobble Holes use an aggressive 60%. The Plant Growth Processor randomizes crop growth stages and vine spread. The Bed Color Processor randomizes bed wool colors, the Brewing Stand Processor randomly stocks brewing stands with ingredients, and the Chiseled Bookshelf Processor fills bookshelves with a random selection of books.