Mark Johnson

Mark Johnson

Mark Johnson's most popular book is Economic Science Fictions with 4 saves and an average rating of 2.

Authorship percentage indicates primary author status - excluding introductions, forewards and other contributions.

Series

92 released books

Authored 0% of series

GURPS Third Edition

GURPS Third Edition is a 92-book series with 92 released primary works first released in 1988 with contributions by Lee Gold, Hunter Johnson, and Steve Jackson.

GURPS Basic Set
GURPS Ice Age: Roleplaying In the Prehistoric World
GURPS Módulo Básico