Mini Biomes

Mini Biomes are smaller strucutures or formations generated inside major Biomes and Caves. Mini Biomes may have unique interactions, monsters and items that can only be found on them.

Surface Ruins

Can be found on the surface of any island. In rare cases, two such ruins can spawn on the same island. Each ruin will have one Chest or Barrel containing random loot and one of the following Equipment items: Handgun (with Simple Bullets), Copper Pitchfork, Nunchucks, Fuzzy Dice, or Fins.

Underground Ruins

Can be found in all Caves and Deep Caves. The Underground Ruins will consist of random Furniture and one Chest with Crops, Fruits, Seeds and Saplings corresponding to the biome, as well as Potions, Coins, Ammo and other loot.

Vampire Crypt

Can be found in Forest Caves and Snow Caves. Crypts will consist of Grave Stones that drop random loot when mined with a Pickaxe, as well as Stone Coffins containing Bloodplate Set, Vampires Gift and other loot. As the name suggests, Vampires spawn in this mini-biome.

Spider Nest

Can be found in Forest, Snow and Swamp Caves. This mini-biome consists entirely of cobwebs, which significantly slow down the Player's movement. The cobwebs can be easily destroyed with Weapons, but they will grow back over time. As the name suggests, Spiders spawn in this biome.

In the Snow Caves, Royal Eggs will spawn in the Spider Nest. Breaking one of them will immediately summon the Queen Spider boss.

Small Treasure Room

Small Treasure Rooms can be found in all Caves. They can be generated with or without Traps. Each room will have one chest with Equipment, Materials, Consumables and other random loot corresponding to the biome.

Treasure Room

Treasure Rooms can be found in all Caves. They are filled with Coin Stacks, Vases and Crates that drop random loot when destroyed.

Puzzle Treasure Room

Large Room filled with four memory puzzles, two small loot rooms to either side (with auxiliary switches in case another player traps you), and one large loot room unlocked by traversing the puzzle. Found in all Caves. There also exists a version where several traps go off in a pattern. Players must navigate through this maze of traps by timing their movement to the pattern of the traps. At the end is the usual chests and coins.

Thorns

Thorns mini biome in the Swamp Caves.

Ancient Statue Hall

Ancient Statue mini biome in the Desert Caves. It will be filled with crates and vases full of treasures (see Treasures for a list of possible loot), but don't smash the statue unless you are prepared to fight the Ancient Vulture.

Abandoned Castle

A mini biome in the Deep Forest Caves.

Crystal

Crystal mini-biomes can be found in Forest, Desert, Deep Forest and Deep Swamp Caves. They consist of crystal clusters of Amethysts, Emeralds, Rubies or Sapphires, which can be obtained by mining them with a Pickaxe. Introduced in 0.25.0.

Sapphire mini-biome in Forest Caves.

Ruby mini-biome in Deep Forest Caves.