Secret world seeds

Some world seeds have been discovered as secret easter eggs, which generate worlds with strange or unique features. Some can drastically affect world structures and biomes, game mechanics, and/or theme music.

Worlds created with these seeds will not be entirely identical, despite having the same seed.

Drunk World


This seed references the date of 1.4's official release, 5/16/2020, and generates a strange world referred to in the source code as "Drunk World."
 * Seed:  or


 * All music is replaced with its counterpart from Terraria: Otherworld.
 * Both World evils generate, each on opposite sides of the world, and both the Corruption and Crimson Biome Chests are present in the Dungeon.
 * On a Blood Moon or Solar Eclipse, the Dryad and Steampunker will randomly either sell the Corruption or the Crimson corresponding items, not both.
 * The world icon in the world selection menu shows a tree infected with both world evils.
 * Both ore variants generate in the world.
 * The Party Girl replaces the Guide upon entering the world for the first time.
 * Living Trees generate much more frequently on the surface, many of which are clustered and interconnected underground.
 * Moon Lord Legs and Red Potion items can generate in Chests.
 * Marble and Granite caves swap their structures.
 * Jungle and Snow biomes generate on the same side opposite of the Dungeon.
 * The Dungeon generates underneath a "dead" Living Tree which is painted red, yellow, blue, or purple.
 * The surface entrance is completely removed, and the Old Man is placed in a pre-generated house underground, making it harder to defeat Skeletron.
 * The Dungeon contains Chippy's Couch.
 * The Jungle Temple is painted green and is much larger in size.
 * Bee Hives are replaced with oversized variants, hosting multiple Larvas.
 * The Underworld layout is inverted, with the middle third as a continuous lava lake and the two thirds at the edges containing Ruined Houses.
 * Floating islands are now either deserts with sand instead of dirt and/or snow biomes with snow instead of dirt with a corresponding Water Fountain.
 * Both Oceans have a much higher chance to generate as the ocean trench variant.
 * While generating:
 * The background shows a Glowing Mushroom biome.
 * The moon resembles a glowing smiley face and clouds resemble Redigit's head.
 * The generation descriptions and tips become random numbers that change every tick (except when "placing traps").
 * The outline of the progress bar rapidly flashes between Corrupt and Crimson.

Not the bees
This seed references a meme from the 2006 remake of the film The Wicker Man. It generates a world dominated by bee-themed biomes and bee-related items and structures.
 * Seed:  or   (case insensitive)


 * While generating, the generation descriptions all say "Generating Bees".
 * Forest is replaced with Jungle.
 * Hive Blocks replace Stone Blocks.
 * Honey Blocks replace Sand Blocks in the Ocean.
 * Hornets and Larva can appear everywhere.
 * The Dungeon is Painted orange.
 * The starting NPC is the Merchant instead of the Guide.
 * Queen Bee spawns at the edge of the world.
 * All Water is replaced with Honey.
 * The Desert and evil biomes are not affected.
 * The border between the Caverns and Underworld layers are always Glowing Mushroom biome.
 * Most of the Mud Blocks in the Glowing Mushroom biome are replaced by Crispy Honey Blocks.
 * The snow biome is composed solely of Hive blocks.

For the worthy
This special world's features aim to drastically increase the difficulty of the game.
 * Seed:  (case insensitive)
 * The world generation screen has backwards text.
 * Water pools throughout the world may be generated as lava pools instead.
 * The Demolitionist replaces the Guide upon entering the world for the first time.
 * Many bosses are either larger or smaller than normal.
 * Larger than normal bosses include Skeletron, King Slime, the Destroyer and The Hungry.
 * Smaller than normal bosses include the Golem and the Wall of Flesh.
 * Pots drop lit bombs (the exploding kind, not the item).
 * Spider Nests, Granite Caves, Marble Caves, and Glowing Mushroom biomes are much more common.
 * Glowing Mushroom biomes are much larger in size.
 * Floating Islands are always infected with the world's evil, with matching water fountains.
 * Skyware chests within are replaced with locked Gold Chests.
 * The Dungeon generates painted with vibrant colors and filled with many more Spike traps.
 * The Jungle Temple is painted green and is much larger in size.
 * In the Underworld:
 * The ashen ground is speckled with 1 block sized pockets of lava.
 * Digging up ash blocks will sometimes trigger other nearby ash blocks to be affected by gravity, similar to sand blocks.
 * All Ruined Houses are made of Hellstone Bricks.
 * All Demons spawned are replaced with Voodoo Demons.
 * Wooden chest loot can contain a single dirt block mixed in with everything else.
 * Red Potions can generate in chests. When consumed, these will now apply 3 random 30 minute buffs instead of applying all debuffs like in other world seeds.
 * Bosses have doubled health, on top of previous Expert/Master bonuses.
 * Enemies have increased health and massively increased damage. Demon Eyes pre-hardmode, for example, deal 40 damage to a character in full Solar Armor.
 * Bunnies are replaced with Explosive Bunnies.

Trivia

 * The discovery of Drunk World originated from an image posted in a tweet by Redigit, featuring the release date and the new world generation screen.
 * The moon forming a smiley face in the world generation screen of Drunk World is a reference to a meme stating that "The moon, Jupiter and Venus will form a smiley face on May 16th, 2020", the date 1.4 was released.
 * The Moon Lord Legs is likely Redigit's answer to a petition to add the Moon Lord's legs to the 1.4 version of the game.