Boss health bar

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Desktop/Console/Mobile-Only Content: This information applies only to the Desktop, Console, and Mobile versions of Terraria.
"Boss Bar" redirects here. For boss health, see Bosses#Pre-Hardmode bosses.
Eye of Cthulhu boss health bar.png
The Eye of Cthulhu's health bar.

When a player is within the range of a boss, a health bar will appear on the bottom of the player's screen / below the minimap that represents the boss's Health. When there are multiple bosses in the player's range, only the boss that is closest to the player will be shown.[1]


  • Bosses with multiple parts or segments (e.g Golem) will share one bar.
  • All four Celestial Pillars have two bars, one for its shield and one for its health, and the shield bar will overlay the health bar.


  • The icon on the left of the boss health bar is the map icon for that boss.



  1. Information taken from the Desktop version Desktop source code, function TryFindingNPCToTrack() in Terraria.GameContent.UI.BigProgressBar.BigProgressBarSystem. There may be inaccuracies, as the current Desktop version Desktop version is