The Party Girl replaces the Guide as the starting NPC, and the Dungeon entrance is now generated under a Living Tree painted brown. In this seed, both Evil biomes will generate, as well as both variants of any ore that comes in two varieties.
It has therefore come to be referred to by the Terraria community as drunk world. It invokes a highly extraordinary world generation referred to in the source code as drunkWorldGen.
This seed references May 16, 2020, which is Terraria's 9th birthday and the release date of 1.4.0.1.
