[[File:IconWallZombies.png|left]]'''Pile On is a rune effect in [[Wall of Zombies]]''' is , a highly-damaging Physical Realm [[Witch Doctor skill]] unlocked at [[clvl|level]] 27.

An This rune effect creates a zombie tower which falls over, the zombies bursting as they land and dealing huge weapon damage as well as knocking back enemies in the impact zone. The damage scales up with level, and is 765% at level 60, but much less at lower levels. The function and appearance of this skill have proved somewhat controversial; some fans love it while others think the zombies look much too nimble and acrobatic as they vault up atop each other's shoulders, [http://en.wikipedia.org/wiki/Cirque_de_soleil Cirque de Soleil] style, before toppling forward. That the zombies vanish upon hitting the ground seems odd as well, as they seem more solid than gas, and you almost expect them to grapple with the enemies upon impact, rather than simply disappearing.  ==Skill Rune Effects==Refer to the [[Alabaster RuneWall of Zombies rune effects]] placed in it article for a thorough description of all five rune effects, including screenshots, videos, and strategy tips. {{skill description header}}<skill subcat="Physical realm spell" class="WitchDoctor">Wall of Zombies</skill><skill class="WitchDoctor" rune="Pile On">Wall of Zombies</skill>  ==Media== Screenshots and movies will alter be added post-release.  ==Development== Prior to the skill revision in February 2012, this rune effect was enabled by the [[Alabaster Rune]], granting the following way.effect with a level 7 runestone: