The secret vampire seed transforms the standard Terraria experience into a gothic survival challenge by turning the player into a vampire. Sunlight becomes a lethal threat, inflicting fire and slowness, forcing a permanent shift toward nocturnal activity or a total retreat into underground caverns. Beginning the journey deep beneath the surface creates a unique progression path where the Zoologist replaces the Guide as the primary starting companion. Mastery of this playstyle eventually grants access to powerful mobility through the Amulet of the Night, which allows for a transformation into a bat with infinite flight.
1. Launch Terraria.
2. Select Single Player or host a Multiplayer.
3. Click New.
4. Create a new character.
5. Play as the newly created character.
6. Click New.
7. Press the Seed icon.
8. In the Seed: field, input whatahorriblenighttohaveacurse and hit Submit.
9. Click Apply.
10. Finalize the world customization and hit Create.
11. During generation, the message You have been afflicted with vampirism. will appear.
12. Play the newly generated world.
13. The player is now a vampire and will start underground.