210 books • 29 series
Hero Academy: Oxford Level 9, Gold Book Band: Silver Shadow Strikes Again (Hero Academy)
Hero Academy: Oxford Level 10, White Book Band: The Super-strength Trials (Hero Academy)
Project X Origins: White Book Band, Oxford Level 10: Robots on the Loose! (Project X Origins)
Project X Comprehension Express: Stage 3: Dare to Succeed (Project X Comprehension Express)
Project X Comprehension Express: Stage 3: Thrills and Chills (Project X Comprehension Express)