Celebrationmk10

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Desktop/Console/Mobile-Only Content: This information applies only to the Desktop, Console, and Mobile versions of Terraria.
For the post-Moon Lord launcher, see Celebration Mk2.
Map view of a medium Celebrationmk10 world.

Celebrationmk10 (also known as the Birthday World or Anniversary World) is a secret world seed. It celebrates Terraria's tenth birthday, May 16, 2021.

The following seeds can be used to generate a Celebrationmk10 world (case-insensitive):[1]

  • celebrationmk10
  • 05162011
  • 5162011
  • 05162021
  • 5162021

World generation changes

Overall

Desert

Other changes

While generating

World icons

The world icon of a Celebrationmk10 world is a Pink Sakura tree with a bowknot.

Notes

  • Due to the way certain invasion mechanics work, invasion events like Goblin Army will only take place near the initial beach spawn point. Unlike normal worlds, being near Town NPCs will not cause invasion enemies to spawn around the player.
  • Goblin Scouts will spawn a third of the world away from the beach spawn, which means they spawn around the middle of the world and the opposite ocean.

Tips

  • Starting with the spawn at the Ocean may make the early game progression much harder if the player is on the Jungle side. However, starting on the Jungle side makes it easier to find the Aether.

Trivia

  • The names of the four non-pet starting NPCs in the Celebrationmk10 seed are the names of four members of Re-Logic: Redigit (Andrew), Cenx (Whitney), Yoraiz0r (Yorai), and Safeman (Amanda).
  • Unlike most of the other secret seeds, the Celebrationmk10 seed is interpreted as a number, so any number of 0s can be added in the front (e.g. 000005162011). In addition, there are numerous unintended strings that generate this secret seed (due to the use of the CRC-32 algorithm[12]), such as (case-sensitive):
  • Thirst of dress
  • engineer governor reproduction
  • inform Representative yorai

History

References

  1. Information taken from the Desktop version Desktop 1.4.4.9 source code, methods GenerateWorld() in Terraria.WorldGen.cs and ProcessSpecialWorldSeeds() in Terraria.GameContent.UI.States.UIWorldCreation.cs.
  2. Information taken from the Desktop version Desktop 1.4.4.4 source code, method ImproveAllChestContents() in Terraria.WorldGen.cs. There may be inaccuracies, as the current Desktop version Desktop version is 1.4.4.9.
  3. Information taken from the Desktop version Desktop 1.4.4.5 source code, method SpawnNPC() in Terraria.NPC.cs. There may be inaccuracies, as the current Desktop version Desktop version is 1.4.4.9.
  4. Information taken from the Desktop version Desktop 1.4.4.5 source code, methods SpawnNPC() in Terraria.NPC.cs and TrySpawningFairies() in Terraria.GameContent.Events.MysticLogFairiesEvent.cs. The original 1/3 (33.33%) chance to spawn as Pink Fairy + ( 2/3 (66.67%) chance to spawn as other colors × 3/4 (75%) chance for other colors to become a Pink Fairy) = 5/6 (83.33%) chance. There may be inaccuracies, as the current Desktop version Desktop version is 1.4.4.9.
  5. Information taken from the Desktop version Desktop 1.4.4.5 source code, method SpawnNPC() in Terraria.NPC.cs. There may be inaccuracies, as the current Desktop version Desktop version is 1.4.4.9.
  6. Information taken from the Desktop version Desktop 1.4.4.9 source code, method NewItem() in Terraria.Item.cs.
  7. Information taken from the Desktop version Desktop 1.4.4.9 source code, method NaturalAttempt() in Terraria.GameContent.Events.BirthdayParty.cs.
  8. Information taken from the Desktop version Desktop 1.4.3.6 source code, method setFireflyChance() in Terraria.NPC.cs. There may be inaccuracies, as the current Desktop version Desktop version is 1.4.4.9.
  9. Information taken from the Desktop version Desktop 1.4.4.5 source code, methods TryGettingDevArmor() in Terraria.Player.cs and OpenBossBag() in Terraria.Player.cs. There may be inaccuracies, as the current Desktop version Desktop version is 1.4.4.9.
  10. Information taken from the Desktop version Desktop 1.4.4.9 source code, method NightSetup() in Terraria.Star.cs.
  11. Information taken from the Desktop version Desktop 1.4.4.9 source code, methods UpdateTime_SpawnTownNPCs() in Terraria.Main.cs and GenerateWorld() in Terraria.WorldGen.cs. The related world generation pass is called Guide.
  12. Information taken from the Desktop version Desktop 1.4.3.6 source code, method SetSeed() in Terraria.IO.WorldFileData.cs. There may be inaccuracies, as the current Desktop version Desktop version is 1.4.4.9.