Forest

Forests comprise the majority of the surface world and are typically where the player initially spawns and will spend a majority of their time. The general landscape of a forest includes lots of grass, plenty of trees, several lakes ranging in size from small to large, occasional hills that can reveal cave entrances, and often times contain a Living Wood Tree that sometimes has an underground room. Mushrooms, Sunflowers, Daybloom, Strange Plants, and the Blue Berries and Yellow Marigold dye plants can be commonly found strewn throughout this biome. During the Halloween season, Pumpkins can commonly be found growing in this biome. Pockets of Clay and Stone can also be found on the surface. There is a small chance for low tier ores to spawn on the surface in a forest. The various types of ores that can be found consist of Copper or Tin, Lead or Iron, and sometimes Silver or Tungsten. Surface chests can be found scattered all over the Forest and include many great starter items.

Generally, the Forest is the easiest biome in the game as the enemies encountered here – Slimes (Blue, Green, Purple, and the rare, tiny, but difficult Pinky) during the day and Demon Eyes and Zombies at night – are easily defeated once you've received some basic gear. It's likely you'll build your first base here, as building materials such as Clay, Stone, and Wood are found easily, the spawn rates are generally low, and you'll almost always spawn here first.

In Hardmode, the biome receives a slight buff, with Pre-Hardmode enemies getting stat boosts along with new enemies spawning at night – Possessed Armor and Wandering Eyes, buffed versions of Zombies and Demon Eyes respectively, begin spawning and can be quite difficult to deal with. Wraiths, which can float through blocks, can also be found at night, while Werewolves only spawn during Full Moons but are tough.

The Forest changes noticeably in the outer thirds of the world. Goblin Scouts, which are fairly uncommon and drop Tattered Cloth, begin to spawn. The King Slime boss also has a very rare chance to spawn and can easily surprise and overwhelm an unsuspecting player. Enchanted Sword Shrines, though they can be found in any biome with Dirt and Stone, are almost always found in the outer-thirds of the world in the Forest. They can be easily found as their 1-block wide shafts usually reach up to the surface, and the player can easily mine down to get to the actual shrine, in which case they'll have a 100% / 1 in 3  chance of containing a real sword. Breaking the real sword has a 9/10 chance of dropping the Enchanted Sword and a 1 in 10 chance of dropping the Terragrim / Arkhalis, all very formidable early-game weapons.

The background of forests are randomly generated upon world creation. Regular Forests can be erased by the spread of Corruption, Crimson, and The Hallow. Converted forests can be restored to their pure form by using Purification Powder purchased from the Dryad or its stronger, Hardmode equivalent, the Clentaminator with Green Solution purchased from the Steampunker.

Fallen Logs can be found on the Forest Surface and, when broken by an Axe, drop Wood. Destroying all of them will permanently stop Fairies from spawning. Additionally, Sakura and Yellow Willow trees have a 1 in 20 (5%) chance of replacing a normal Forest tree on world generation.

The Golfer, Guide, Merchant, and Zoologist NPCs all like living in the Forest, while the Dye Trader and Painter dislike it.



Spawn Rates

 * During the day:
 * 100%/110% (Hardmode) spawning speed
 * 5/6 (Hardmode) max spawns
 * During the night:
 * 166% spawning speed
 * 6/7 (Hardmode) max spawns
 * During a Blood Moon:
 * 333% spawning speed
 * 11/14 (Hardmode) max spawns
 * Having town NPCs can lower spawn rates in this area. (Blood Moon is an exception however.)

Happiness

 * NPCs that like the Forest:
 * Merchant
 * Guide
 * Golfer
 * Zoologist
 * NPCs that dislike the Forest:
 * Dye Trader
 * Painter

Background scenery
During the day:
 * A hot air balloon
 * A blimp-ship
 * A flock of birds
 * A Wyvern (Hardmode only)

During the night: When a meteor is landing
 * The Eye of Cthulhu.
 * A meteor

History
Wald Erdő Лес 森林