Facts to Give you GoosebumpsNine facts about R.L. Stine's spooky series 1. Over 350 million Goosebumps books have been sold since it started in 1992 2. There are at least 180 books and counting! geek.com 3. It takes author R.L. Stine just three weeks to write each book. That’s pretty quick! 4. R.L. stands for Robert Lawrence 5. R.L. Stine’s favourite monster is King Jellyjam! 7. There’s a new book coming next year called Slappy’s World 8. R.L. Stine says his reason for writing these books is he just likes scaring kids. How mean!