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The Battle of the Labyrinth (Percy Jackson and the Olympians, #4)
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4.42 avg rating — 1,260,416 ratings
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| 2 |
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The Lightning Thief (Percy Jackson and the Olympians, #1)
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4.31 avg rating — 3,561,048 ratings
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| 3 |
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The Lost Hero (The Heroes of Olympus, #1)
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4.29 avg rating — 968,035 ratings
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The Blood of Olympus (The Heroes of Olympus, #5)
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4.43 avg rating — 408,619 ratings
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The Son of Neptune (The Heroes of Olympus, #2)
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4.40 avg rating — 689,326 ratings
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