Engineer's Gravelly Growl (halloween spell)

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The Engineer's Gravelly Growl is a tool item. When applied to any Engineer or all-class cosmetic item, the pitch at which the wearer speaks will be lower.

Prior to Scream Fortress 2015, it could be found during Halloween events inside of Haunted Halloween Gifts on Ghost Fort, or from a Pile Of Curses.

Update history

October 26, 2012 Patch (Spectral Halloween Special)

  • Halloween Spells were added to the game.

October 29, 2013 Patch (Scream Fortress 2013)

  • Enabled Halloween Spell Potions

November 11, 2013 Patch

  • Effects will only be visible during Halloween/Full Moon events.

October 22, 2014 Patch

  • Enabled Halloween Spell Potions

October 23, 2014 Patch

  • Updated Halloween Spells to be tradable

December 17, 2015 Patch (Tough Break Update)

  • [Undocumented] Halloween spells are no longer tradable.

March 30, 2023 Patch

  • [Undocumented] Renamed "Voices From Below" to "Voices from Below".

October 9, 2023 Patch #1 (Scream Fortress 2023)

  • [Undocumented] Corrected the name of the Engineer's Gravelly Growl Halloween Spell.


  • The backpack icon incorrectly uses the coloring overlay intended for paint cans.


  • Though it is intended for use by the Engineer, the effect will occur for any class if they are wearing an item with it applied.
  • Any unused Halloween Spell items are removed at the end of a Halloween event.