"Sozin's Comet" received many positive critical reviews; Ed Liu of Toon Zone stated that it made "Avatar" "one of the finest animated television series ever made", and IGN stating that this "film" deserved an Academy Award. Toon Zone praised the skill of the animation directors in designing the sweeping movements of the battle scenes, as well as the slower scenes, "including one moving reconciliation and the quiet coda that ties off many of the remaining loose ends of the series". IGN reviewer Tory Ireland Mell wrote that she would "put it in the top ten films of all time". She also praised the artistic skill of the designers, stating that the "whole dark tone was gorgeous to look at", especially the "art of the Lion Turtle". She thought that "Sozin's Comet" lacked plot holes, as well as unnecessary plot devices, stating that the "story moved and kept us moving right along with it from beginning to end". She gave "Sozin's Comet" a 10 out of 10 "Masterful" rating.