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Secret seeds43
Terraria has two kinds of hidden world seed. The classic special world seeds, typed as the world name when you create a world, flip the whole run into a themed challenge like For the Worthy or Zenith. The 1.4.5 update adds a second set of smaller secret modifiers, each toggled by its own phrase, that tweak one thing about the world such as painting it gray or flooding it. This page lists both, straight from the game files.
two kinds of seed
A world seed normally decides terrain and nothing else. These do more than that. Nine of them sit in the seed menu as toggles you pick during world creation. The rest are hidden phrases you have to type in by hand once, after which they join that menu permanently. Capitalization, spaces and punctuation are all thrown away, so only the letters and numbers matter.
what they actually change
The menu seeds rewrite the game rather than the map. For the Worthy pushes the world one difficulty step above the one you picked and rebuilds the terrain around killing you. The Constant adds hunger, darkness that does real damage, and a sepia filter over everything. Not the Bees converts almost the whole world to jungle and hive. Skyblock deletes the world and leaves you on one small island with a solidifier. The typed seeds tend to be narrower, changing paint, cave generation or where a structure lands.
they stack, and stacking is the point
Any number can run at once, and many pairs do something neither does alone. Skyblock next to a biome seed scatters that biome across floating islands. Several combinations count how many typed seeds are active and behave differently once you pass three. The Zenith option is itself a bundle of every menu seed except Skyblock, and switching that on alongside every hidden one produces the hardest world the game will build.
Classic special world seeds
Type one of these as the world name on the create screen. Each one turns on a full themed mode with its own worldgen and rules. They stack with difficulty, and Zenith combines all of them at once.
fortheworthyA world of no mercy. Enemies hit harder, bosses gain new attacks, everything is bigger and meaner. The master-difficulty challenge seed.
Effect: Much harder enemies and bosses, larger world hazards
getfixedboiEvery other secret seed at once plus brand-new surprises, built to break you. Community name is Zenith; the trigger is get fixed boi.
Effect: Combines Remix, Drunk, Not the Bees, No Traps, The Constant, Celebration and For the Worthy
051620205162020World generation gone wild. Both evil biomes generate together, layouts get chaotic, and rare structures show up in strange places.
Effect: Corruption and Crimson both spawn, wild worldgen
notthebeesA world oozing with honey where nearly everything is jungle. Buzzing wings and venomous stingers wait around every turn.
Effect: Almost entirely Jungle and Hive, honey everywhere
celebrationmk100516202105162011The 10-year anniversary party world. Colorful, whimsical worldgen with extra gifts left behind by the dev team.
Effect: Festive worldgen, bonus loot and decoration
dontdigupTerraria turned on its head. Up is down, the underworld is at the surface and the sky is where you dig to. Explore The Up.
Effect: Inverted world layout, layers flipped
notrapsA world stripped of traps... probably. The dungeon and temple lose their usual dart, boulder and dryad snares. We think.
Effect: Removes most world traps
constanttheconstanteye4aneyeeyeforaneyeA Don't Starve Together crossover. Persistent hunger, oppressive darkness and Wilson himself. Stay in the light.
Effect: Sanity and darkness mechanics, Don't Starve crossover content
Secret world modifier seeds (1.4.5)
These 35 modifiers were added in 1.4.5. Each has its own trigger phrase, stored in the game as a one-way hash, so most of the exact phrases are not yet known and are marked hidden below. The one confirmed so far is planetoids, which builds a world of small round landmasses. The name and effect of every modifier are shown here from the game's own descriptions.
World is painted gray
Journey back to a more simple time, without all of those pesky colors!
World is painted negative
Scratch that, reverse it.
World is echo coated
Hidden in plain sight.
World is illuminant coated
Why is it so bright in here?
World has no surface layer
The outside is so overrated...
World has extra, much larger Living Trees
What's better than a happy little tree? A whole bunch of giant Living Trees!
World has extra Floating Islands
You always did have your head in the clouds.
Error world
Cats and dogs, living together, mass hysteria!
World is filled with graveyards, starts on a Blood Moon
Klaatu Verata... Necktie!
Surface layer is higher
In space, no one can hear you scream.
World has neverending rain
You're going to need a bigger boat.
World has larger underground cabins
What lost civilization built all of this?
Starting spawn point in a random location
Where the heck are we?
World has teleporters scattered throughout
Walking is for losers.
World starts in Hardmode
So, you have elected the way of pain...
World starts with no Corruption or Crimson
Finally, we have found a cure!
World has a Hallowed surface
Rainbows, kittens, and death.
Entire world is infected by Corruption or Crimson
We are in some real pretty stuff now, man!
World has a Mushroom surface
I hear that Truffle is a really fun guy.
World has a Desert surface
Like the beach with a lot less water.
World is covered in Poo blocks
Cleanup on aisle 6!
World has no spider caves
Eight legs were far too many.
World has no traps
No, seriously. We mean it this time, promise!
World has all sorts of rainbow blocks and more
ROY G BIV was here.
World has extra chasms and pits
Watch your step!
planetoidsWorld consists of small planetoids
Aww, they look like little baby planets!
World is flooded
The search for Atlantis begins!
Portal Gun can spawn in any chest
Here Come The Test Results: 'You Are A Horrible Person.'
World consists of snow and ice
Some people are always trying to ice skate uphill...
World starts with pumpkins
All we are missing now is a corn maze.
Halloween event always active
Trick or treat!
Christmas event always active
Let's see what is under the tree...
Player is a Vampire - avoid the sun at all costs
You are going to need some SPF9000.
Player spawns are specific to team colors
Stay off of our turf!
A dungeon crawling experience
Buy one Dungeon, get one free!
Type a seed as the world name on the create screen · preview any of them in the seed map