Attack on Titan is a colossal hit in the anime world. internationally. Also a lot of non-anime fans love it. Does it earn it's colossal praise? Yes, if you don't mind depressing politics mediocre to average art or ambigous morals. The story and world-building was great; I really liked how in-depth how the author provided factoids about how the 3dmg works, and how titans work. The realism on how the characters react to the horror the series presents. Many characters that seem archetypical (Armin, Sasha, Christa, Eren) are far more than just that, especially Christa, she built immensely as a character. Some problems of the series are the plentiful cliffhangers, sluggish pacing, and not that great art. Overall, Atrack on Titan is a solid series with a colossal bite.