29 books · Ages 4–12 · Middle Grade, Chapter Books
R.L. Stine wrote over 200 Goosebumps books by following a formula so effective it became a genre: ordinary kid, creepy premise, escalating tension, twist ending. The books are calibrated to scare without scarring, which is a harder line to walk than it looks. Multiple sub-series, two films, and a TV adaptation have kept the brand alive for three decades.
Start anywhere — each book stands alone.
That said, The Werewolf of Fever Swamp and Night of the Living Dummy are great first picks.
No particular order needed — browse and pick what catches your eye.