Diablo Wiki
For the Diablo II enemy type, see Rock Worm.

The Rockworm may very well be the ugliest creature ever to blight the world with its presence. Bereft of any features aside from its massive jaws, the rockworm appears to be a giant invertebrate. I should like to study it further, but its burrowing tendencies make it extraordinarily difficult to tract. - Abd al-Hazir

Rockworms are Beast enemies in Diablo III. They are encountered in Act II, and the Demonic Serpent variant is found in Act III. They are known for their ability to burrow underground, and their high melee damage. In Act V, a similar monster takes this niche, the Scavenging Tunneler.

Rockworms are the only type of enemies that may never appear in Nephalem Rifts.


Rockworms are normally concealed underground, where they are unreachable and cannot be harmed in any way. When they feel a hero passing nearby, they shake the ground violently as they burrow towards them - the location they will emerge can be seen by the earth cracking and rising. Then they emerge abruptly, bursting out and trying to attack the enemy with their jaws. Their bites are very quick and deal heavy Physical damage. Moreover, if they manage to emerge directly beneath an unwary player's feet, they are capable of eating said player whole, chewing them and spitting them out after a few seconds. Rockworms do not have ranged attacks. They are immune to most forms of Knockback.

After emerging, Rockworms will burrow again if there are no enemies within melee range, only to unburrow moments later at a different location. They may not burrow within 4 seconds of emerging, and they may not stay burrowed more than 3 seconds. Rockworms do not chase fleeing prey: if it runs further than a Rockworm can see, the worm will wait patiently for it to return.

With careful positioning, one may kill a worm from afar without ever giving them a chance to attack. This is is especially useful against elite Rockworms, who are very challenging to fight normally due to burrowing and high melee damage.


Demonic Serpents

Patch changes[]

  • Patch 2.1.1 - Rockworms can no longer appear in Nephalem Rifts.
  • Patch 2.4.3 - Rockworms will no longer stay burrowed for more than 3 seconds, and cracks in the ground now hint at where they will emerge.