To prevent overloading the engine with lost souls, a hard-coded lost soul limit was added which prevents pain elementals from spawning them if there are already 21 lost souls in the level. Because pain elementals have no other attacks, this has the side effect of rendering them helpless when the limit is reached. A pain elemental will still attempt to attack the player, and will follow the typical attack animation, but no lost soul will emerge from its mouth and none will appear upon its death.