Secret world seeds

Secret world seeds are world seeds which have been discovered as secret that generate worlds with strange or unique features. Unlike regular world seeds, which affect only the usual world structure, secret seeds can produce worlds with characteristics that would not be attainable through normal world generation, i.e., they can affect the game's mechanics while playing in that world. For instance, they may change enemy statistics and behavior, item drops, graphics, theme music and more.

Secret seeds use unique world-generating mechanics that differ from normal seeds. Using a secret seed overrides the normal use of seeds as a source of randomness and two worlds created via the same secret seed will not necessarily be identical.

There are currently five /  three different secret seeds.

Drunk world



 * Seeds:

This seed references May 16, 2020, which is Terraria's 9th birthday and the release date of 1.4.0.1. It invokes a highly extraordinary world generation referred to in the source code as drunkWorldGen. It has therefore come to be referred to by the Terraria community as drunk world.

In this seed, both Evil biomes will generate, as well as both variants of any ore that comes in two varieties. The Guide is replaced by the Party Girl as the starting NPC, and the Dungeon entrance is now generated under a Living Tree painted brown.

While generating

 * Generation descriptions and tips become random numbers that change every tick (except when "").
 * The background shows a Glowing Mushroom biome, with clouds that resemble Redigit's head. The moon moves backwards and resembles a smiley face (see Trivia). Once the world finishes generating, it is possible to go back to the main menu with these effects still visible.
 * The outline of the progress bar rapidly flashes between Corruption and Crimson.
 * The Console Title music plays, instead of the normal Title Screen theme.
 * The Terraria logo spins out and disappears along with the version number.

World icons
The world icon of a drunk world shows a tree infected with both world evils.

Not the bees



 * Seeds (case-insensitive):

This seed references the NOT THE BEES! meme which originated from the 2006 horror film . It generates a world dominated by bee-themed biomes and bee-related items and structures.

Most of the world is replaced with the Jungle biome, with Hive and Honey Blocks found in abundance. See below for a full list of replaced tiles. The starting NPC is the Merchant instead of the Guide. He will sell the Furnace as per usual in the Jungle, and Larvae spawn throughout the world.

While generating

 * While generating, all generation descriptions say "".

World icons
The world icon of Not the Bees world is a Rich Mahogany surrounded by Bees.

For the worthy



 * Seed (case-insensitive): for the worthy

This special world's features aim to drastically increase the difficulty of the game. It is referred to in the code as getGoodWorldGen. "For the worthy" directly references the tooltip of the Red Potion, "".

All enemies' contact damage, health and coin drop rates are increased, in addition to the world difficulty multiplier, by their standard amount in a normal world. After that, the damage is increased by another. Damage from ranged attacks is typically left unchanged. Bunnies (even placed) are replaced with Explosive Bunnies, and all Demons are replaced with Voodoo Demons. The Demolitionist replaces the Guide upon entering the world for the first time.

Many other changes are made that increase the difficulty of the game. For instance, some water pools throughout the world are replaced with lava. Pots and trees may drop lit bombs that shortly explode, instead of their usual items. Skyware Chests are replaced with locked Gold Chests but they still have their respective loot. However, it is still possible to get Skyware Chest loot before Skeletron via use of a Sky Crate.

Bosses also receive changes to size and/or AI that make battles much more difficult.

While generating

 * The world generation screen messages are spelled backwards.

World icons
The world icon of a "For the worthy" world is a Yellow Willow tree.

Celebrationmk10



 * Seeds (case-insensitive):

This seed celebrates Terraria's tenth birthday, May 16, 2021.

The player spawns on the beach. Andrew the Guide, Whitney the Steampunker, Yorai the Princess, a Party Girl, and an Angora Town Bunny will also spawn there and a Party immediately starts. A majority of the world is painted in bright colors.

Items in Chests always have a "best" modifier such as Menacing or Legendary.

Two unique enemies can be encountered in this seed:
 * The Jungle Mimic can be found in the Hardmode Jungle.
 * Golden Slimes can rarely spawn.

The chance of obtaining rare items such as the Rod of Discord and Developer items is substantially increased, the Traveling Merchant always sells 2 extra items, and the the Princess sells rare items such as the Slime Staff and Discount Card.

While generating

 * The loading screen for this seed is completely normal.

World icons
The world icon of a Celebration world is a Pink Sakura tree with a bowknot.

The Constant


The Constant is a new secret world seed added in 1.4.3 which is a crossover with Klei Entertainment's Don't Starve Together.
 * Seeds (case-insensitive):

This seed introduces hunger and darkness mechanics that make the early game especially challenging. Marble biomes with statues and Spider Caves will generate on the surface, and cacti will damage the player.

The entire game uses a dark shader that gives the game a gloomier look. Items exclusive to the Don't Starve Crossover content are more likely to drop.

While generating

 * The game adds 'Generating wavy caves' as one of its messages.

World icons
The world icon of a Constant world is an Evergreen from Don't Starve.

Trivia

 * The discovery of the drunk world originated from an image posted in a tweet by Redigit, featuring the release date and the new world generation screen.
 * Using the Demon Conch in a new drunk world will not transport the player to the Underworld, as it requires solid ground to place the player on. An artificial surface must be built instead.
 * The smiley-faced moon seen during the generation of a drunk world is a reference to an astronomy hoax that was said to happen the same day Journey's End released on PC.


 * "Not the Bees!" is also an achievement for firing a Bee Gun with a full set of Bee armor equipped.


 * Because of how stat scaling is implemented, the health and damage is doubled instead of simply adding one to the multiplier in For the Worthy seeds.
 * This results in Journey Mode Expert difficulty enemy health being equivalent to non-Journey Mode Master difficulty enemy health. Outside Journey Mode, Master difficulty enemy health in "For the worthy" is ×4 base health whereas in Journey Mode it is ×6.
 * Damage dealt by enemies also scales higher in Journey Mode. Just like Journey Mode Expert difficulty health is equivalent to non-Journey Mode Master difficulty, enemy damage appears to scale in a similar manner.
 * In "For the worthy", several mechanics reference very early versions of Terraria where they were standard behavior: This includes the Locked Gold Chests generating on Floating Islands, Ash Blocks collapsing at random and Chests containing an Angel Statue instead of a valuable item.


 * The names of three of the starting NPCs in the Celebrationmk10 seed are the names of three members of Re-Logic: Redigit (Andrew), Cenx (Whitney), and Yoraiz0r (Yorai).
 * Due to the fact that the Steampunker spawns right from the start of the game in Celebrationmk10 worlds, it is possible to buy the Jetpack, a post-Mechanical Boss wing before a single boss has been defeated.


 * Several world generation changes in the Constant seed recreates specific Set Pieces or items in Don't Starve:
 * The Marble patches recreate the Marble Sculptures set piece.
 * The Spider Caves on the surface recreate Spider Dens.
 * Several game mechanics in the Constant seed is based on mechanics in Don't Starve, these include:
 * The shader is based on the shader effect in Don't Starve.
 * A world can only have Iron and Gold Ores is due to the fact that only Iron Ore and Gold Ore exists in Don't Starve.
 * The hunger mechanic is based on Don't Starve's Hunger.
 * In Don't Starve, the player is also being able to see things normally during Full Moons.
 * However, the player cannot see things during New Moons in Don't Starve, which is not the case in Terraria.
 * The mechanic of player getting damaged in dark areas is based on a similar mechanic, that the player will be attacked by Charlie in completely darkness.
 * The player getting damaged by Cacti is based on Don't Starve's Cactus, which damages the player when harvesting it.
 * Exposed Torches and Campfires extinguish when Rain starts, as in Don't Starve, Rain will make Torches and Campfires burn out faster.


 * Due to the way Drunk and Celebrationmk10 seeds are implemented, the list isn't exhaustive and any number of 0 can be added before the number seed. Also many other unintended seeds have the same result, like (case sensitive) :
 * "now aunt brush", "Joke Disappear Horizon" and "disapprove stiff solution" produce a drunk world.
 * "Thirst of dress", "engineer governor reproduction" and "inform Representative yorai" produce a celebration world.
 * If a modified world were to have 2 or more active secret seeds at the same time, the icon for it would follow this priority : Drunk world > For the worthy > Not the bees > Celebrationmk10 > The Constant