Environments

The world of Terraria, consists of nine officially mentioned areas as of now.

= Forests =



Forests can spawn small and large trees, but one can only replant them using acorns dropped by trees. There are many natural caves in forests.

Monsters:
 * Zombie (Night)
 * Demon Eye (Night)
 * Slime (Day)
 * Goblins (Day, during Goblin Invasion)
 * Eye of Cthulhu (Spawnable Boss)
 * Pinky (Day)

= Deserts = Large sandy areas are sometimes generated, however nothing is particularly special about them because they are completely barren. They have the same monsters as forests.

= Underground = The underground consists of two layers: the dirt layer and the stone layer. Ores, pots, and chests can be found throughout. Water is a common sight anywhere underground and demonic Altars can be found within these layers, however it is a very rare occurrence. Lava becomes common near the bottom of the stone layer.

Monsters: Chests may contain: Pots may contain:
 * Giant Worm
 * Skeleton (stone layer)
 * Mother Slime (stone layer)
 * Bomb
 * Dynamite
 * Flippers
 * Breathing Reed
 * Enchanted Boomerang
 * Hermes Boots
 * Cloud in a Bottle
 * Band of Regeneration
 * Gold Coins
 * Silver Coins
 * Copper Coins
 * Angel Statue
 * Bomb
 * Shuriken
 * Torches
 * Silver Coins
 * Copper Coins
 * Arrows
 * Hooks

= Underground Jungles = Underground Jungles are a very remote area of the world, residing deep underground. Like Dungeons, these areas have few dead ends; unlike Dungeons, however, they are covered in plants. They have many items hidden in them, one of which is the Ivy Whip.

The Underground Jungle is one of the late game areas and should be avoided at all costs by weaker players. Hornets are very strong and should be avoided until the player has at least Demonite or Meteorite tier weapons and armor.

Underground Jungles are made almost entirely of mud, and this can sometimes reach to the surface, leaving large areas of almost entirely mud at the surface, which can be used to locate the Underground Jungle.

Monsters:
 * Man Eater
 * Hornet

= The Underworld= Main article: The Underworld

A lava-filled, monster-infested hell located below the stone layer. This is, at the moment, the lowest layer in Terraria. It can be considered the most dangerous area, even for end-game players.Found at 3000 feet down

Monsters:
 * Bone Serpent
 * Fire Imp

= The Corruption = Main article: The Corruption

The Corruption spawns higher-level monsters at all times of the day and should be avoided initially. Corruption is special because it will override nearby dirt blocks to spread, unless the dirt block has a sunflower on it. Chasms, Demon Altars, and Shadow Orbs can be found here. Corrupted areas can be cleared with Purification Powder.

Monsters:
 * Devourer
 * Eater of Souls
 * Eater of Worlds (Spawnable Boss)

= Meteorite= After smashing a Shadow Orb, a Meteorite will crash into the planet. It is a small area, but should be avoided by lower-level players. The Meteorite itself is made of Meteorite ore, a high-level material that harms the player on contact (an Obsidian Skull is useful here as it protects from fire damage).

Monsters:
 * Meteor Head

= Dungeons= Dungeons are enourmous buildings found at the edge of a generated world, spanning many layers deep. They're filled with treasure chests and unique items (such as water candles and books), all of which are spread evenly (chests further down in the dungeons don't necessarily have better loot) throughout the Dungeon. Dungeons are vertical, underground towers, with lots of tunnels branching off the main tower. They are difficult to traverse without grappling hooks or other special items. Dungeons are made of a special brick, the colour of which is determined at world generation. Unique and uncommon enemies spawn in large amounts in this biome. The Skeletron boss must be defeated to enter a dungeon.

According to the Production Assistant 'Blue'; there are over 20 different dungeon colours, which are random in each world you create.

Attempting to enter the dungeon without defeating The Old Man (Skeletron) will cause the player to die.

Monsters: Chests may contain:
 * Angry Bones
 * Burning Skull
 * Dark Caster
 * Skeletron (Guardian Boss)
 * Aqua Scepter
 * Muramasa
 * Rocket Boots
 * Magic Missile
 * Angel Statue
 * Magic Mirror
 * Handgun
 * Blue Moon

= Floating Islands= Floating Islands are masses of land that appear in the sky. Just like in forests, you can find trees and grass growing over dirt blocks, with some stones and ores in the ground. They usually have a building made of ore bricks and a chest inside. The quality of the island can easily be identified by the type of brick the building is made of. The bricks show the quality of the treasure inside the chest, while the wall material represents the quality and quantity of the ore that can be found in or around the island. The monsters that spawn here are the same as the ones from the forest.

The islands can be found betwen 70 and120 blocks above the ground.

Note: Use a Depth Meter to find the floating islands, for every world it is normally around 400 to 500 feet, though can sometimes be found above and below that height. Your best bet for finding one is to go to 430 feet and move horizontally.

Chests may contain:
 * Lucky Horseshoe
 * Rocket Boots
 * Shiny Red Balloon
 * Starfury