The Immortal Rules by Julie Kagawa, the first book in the Blood of Eden series, has generally received praise for its dark, gritty take on the vampire dystopian genre. Critics highlight the following key aspects:

• Strong Protagonist: The story follows Allison Sekemoto, a street-smart, defiant human-turned-vampire navigating a dangerous world. Critics commend her layered character development and moral struggles, which add depth to the narrative.
• Unique World-Building: Kagawa creates a post-apocalyptic setting where humans live under vampire rule, offering a fresh twist on vampire lore. Critics note the immersive, vividly described world as a standout feature.
• Action-Packed Plot: The book combines fast-paced action with moments of introspection. Critics appreciate its balance of thrilling sequences and thought-provoking themes, such as identity, survival, and humanity.
• Themes and Tone: The dark, dystopian tone, combined with ethical dilemmas and an exploration of power dynamics, has been praised for adding weight to the story.

However, some critics mention that certain tropes, such as a romantic subplot, can feel predictable, and the pacing occasionally drags. Despite these minor criticisms, The Immortal Rules is widely regarded as an engaging and thought-provoking addition to vampire literature.