Why won't Eye of Cthulhu spawn?

When I used the suspicious eye to summon Eye of Cthulhu at night, he wouldn't spawn. Is it a bug or do I need to do anything else? I have full health in red hearts, 13 defense, and I'm using a tungsten broadsword.


You can spawn Eye of Cthulhu with a Suspicious Looking Eye only if all of the following conditions are met:

  • It's nighttime (you should summon it at nightfall anyway since it will disappear at dawn)
  • It's not raining
  • You are not fighting a summoned Eye

Your item won't be consumed otherwise and nothing in particular will happen.