I had heard a lot about Attack on Titan before I picked this up but not much about the actual plot. For that reason, the concept surprised me - it was refreshing, the dark aspects of this alternative world gruesomely pursued and inciting actual fear from page to page. The art itself gave a very creepy, uncanny valley addition to the Titans and truly added to the experience. I don't think it would have been as vivid through text alone; Isayama's designs were perfect for the idea. 
 This review covers volumes 1 to 3 - I felt the plot moved consistently but not enough depth was given to the characters for me to truly feel loss when the action began to really begin. Isayama conveyed emotion well through his drawings but the character development was lacking for me. Overall, I feel less of an extended cast would have helped add more immersion for me as a reader instead of battles feeling like a numbers game with many names to keep track of... But for anyone looking for a post-apocalyptic/horror themed manga to get their teeth into, this a good quick read for that vice!