Steffan O'Sullivan has written at least 5 books. Their most popular book is Fudge with 2 saves with an average rating of 4⭐.
Series
91 released booksAuthored 1% of series
GURPS Third Edition is a 91-book series with 91 released primary works first released in 1988 with contributions by Lee Gold, Hunter Johnson, and Brian J. Underhill.