The CRITICAL BUG is a quest with an eponymous boss. Defeating this boss will unlock the Beetle Quest Pet. The quest scroll can be purchased from the Quest Shop for 4 gems.

The CRITICAL BUG's HP (500) makes this a medium length quest and its strength multiplier (1.5) make this an easy quest. Without using Warrior or Mage boss damaging skills, a four-person party can typically finish this quest in about two weeks.


Something in the domain of Habitica has gone awry. The Blacksmiths' forges have extinguished, and strange errors are appearing everywhere. With an ominous tremor, an insidious foe worms from the earth... a CRITICAL BUG! You brace yourself as it infects the land, and glitches begin to overtake the Habiticans around you. @starsystemic yells, "We need to help the Blacksmiths get this Bug under control!" It looks like you'll have to make this programmer's pest your top priority.


Defeat the CRITICAL BUG.

On Completion

Show/hide spoilers

With a final attack, you crush the CRITICAL BUG. @starsystemic and the Blacksmiths rush up to you, overjoyed.

"I can't thank you enough for smashing that bug! Here, take these."

You are presented with three shiny beetle eggs. Hopefully these little bugs will grow up to help Habitica, not hurt it.


Achievement: The CRITICAL BUG x1
Pet Egg Beetle
Beetle Egg x3 (Once the quest has been completed, the eggs become available for gems in the Market.)
Experience Points
275 experience
37 gold

Quest Pets and Mounts

The eggs obtained from this quest can be used to raise the Beetle pets and mounts.

Show/Hide the Quest Pets and Mounts
Beetle Pet Beetle Mount
Base Pet-Beetle-Base Mount Beetle-Base
White Pet-Beetle-White Mount Beetle-White
Desert Pet-Beetle-Desert Mount Beetle-Desert
Red Pet-Beetle-Red Mount Beetle-Red
Shade Pet-Beetle-Shade Mount Beetle-Shade
Skeleton Pet-Beetle-Skeleton Mount Beetle-Skeleton
Zombie Pet-Beetle-Zombie Mount Beetle-Zombie
Pet-Beetle-CottonCandyPink Mount Beetle-CottonCandyPink
Pet-Beetle-CottonCandyBlue Mount Beetle-CottonCandyBlue
Golden Pet-Beetle-Golden Mount Beetle-Golden

Promotional Art

Artwork featuring the CRITICAL BUG was created for the official Habitica blog.

Promo beetle-larva

Phobia Protection Extension

For those with phobias who don't want to see certain quest pets, mounts, and bosses (such as the beetles from this quest) during gameplay, there is a Phobia Protection Extension.

Development and Credits

  • Release date: October 11, 2016
  • Writers: Emily Austin
  • Artists: Scroll - UncommonCriminal   Boss - starsystemic   Egg - starsystemic   Mount - starsystemic   Pet - starsystemic   Promo Art - karathina
  • Trello Card