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Heart Synthesizer
Heart Synthesizer.png
Type: Passive
Quality: A Quality Item.png
Sell Creep Price: 41 Money.png
Ammonomicon Entry
Play Well, Get Hearts
Extra chance for hearts on room clear.

Heart Synthesizer is a passive item.


  • If the player is not at full health, adds a 20% chance to gain half a heart upon completing a room without taking damage.
    • If Heart Synthesizer triggers, it will spawn a half-heart on top of the player.


  • Synergy.png Synthetic Shield - If the player has Armor Synthesizer or Ammo Synthesizer, grants a familiar that orbits the player and blocks shots. If all three synthesizers are picked up, grants three familiars.
    • The familiar follows the player with almost no delay and represents the synthesizer the player does not currently have (i.e. if the player has Armor Synthesizer and Heart Synthesizer, it will appear to be an Ammo box).
  • Heart Synthesizer has no benefit for The Robot, as he cannot use hearts. It still does, however, contribute to the synergy mentioned above.
  • The Synthetic Shield Synergy familiar in-game orbiting the player

See also[]