Guide:Farming Biome Keys or Key Molds - Terraria Wiki
i've killed about 10000 crimson enemies and still no crimson key. Im going insane. Please somene help. : r/Terraria
I got crimson key pre-plantera !!!! : r/Terraria
Loot gained trying to get a Crimson Key all evening, to no avail. : r/ Terraria
Just started playing Terraria, asked what this key is, my veteran friends reactions are priceless (according to them, less than 0.05% drop chance) : r/Terraria
The wall of flesh dropped a crimson key : r/Terraria
Guide:Farming Biome Keys or Key Molds - Terraria Wiki