Question: What book company also publishes role-playing games?

Context paragraphs:
Systems Failure: Systems Failure is a role-playing game written by Bill Coffin and published by Palladium Books in July 1999.

List of Final Fantasy media: "Final Fantasy" is a series of role-playing video games developed and published by Square Enix (formerly Square).  Its first game premiered in Japan in 1987, and "Final Fantasy" games have subsequently been localized for markets in North America, Europe and Australia, on nearly every video game console since its debut on the Nintendo Entertainment System.  "Final Fantasy" is Square Enix's most successful franchise, having sold over 97 million units worldwide to date.  In addition to traditional role-playing games, the series includes tactical role-playing games, portable games, massively multiplayer online role-playing games, and games for mobile phones.  Its popularity has placed it as the sixth-best-selling video game franchise, and the series has won multiple awards over the years.

Japanese role-playing game: Japanese role-playing games are role-playing games made in Japan.  Japanese role-playing games made their first appearance during the 1980s.  Today, there are hundreds of Japanese-designed games as well as several translated games.  Traditional RPGs are referred to as "tabletop RPGs" or "table-talk RPGs" ("TTRPG", or "TRPG") in Japan to distinguish them from the video role-playing game genre.

San Francisco Book Review: San Francisco Book Review is owned by City Book Review based in Sacramento, California and is one of four book review newspapers.  The company also publishes the "Manhattan Book Review", "Seattle Book Review" and "Kids' BookBuzz" on a monthly basis, and licenses three other publications - "Portland Book Review", "San Diego Book Review" and the Tulsa Book Review.  The different publications publish about 300 reviews a month from more than 40 genres.

Spil Games: Spil Games publishes free-to-play games for iPhone, iPad and Android devices.  The company also publishes games for the web and Facebook.  It is a privately owned company based in Hilversum near Amsterdam in the Netherlands and has more than 150 employees.

Atlas Games: Atlas Games is a company which publishes role-playing games, board games and card games. Its founder and current president is John Nephew.

Bill Coffin: Bill Coffin is a writer of novels and role-playing games in the fantasy and science fiction genres.  Perhaps best known for his work at Palladium Books from July 1998 through May 2002, he made significant contributions to several of Palladium's game series, most notably "Palladium Fantasy", but also "Heroes Unlimited" and "Rifts", and created his own game, "Systems Failure".

Steve Jackson Games: Steve Jackson Games (SJGames) is a game company, founded in 1980 by Steve Jackson, that creates and publishes role-playing, board, and card games, and the gaming magazine "Pyramid".

Fantasy Flight Games: Fantasy Flight Games (FFG) is a game company based in Roseville, Minnesota, United States, that creates and publishes role-playing, board, and card games.

American Book Company (1890): American Book Company was formed in 1890 by the consolidation of Van Antwerp, Bragg and Co., A.S. Barnes & Co., D. Appleton and Co., and Ivison, Blakeman and Co. It was acquired by Litton Industries in 1967 and existed as a division of Litton Educational Publishing, Inc. until being sold to the International Thomson Organization in the late seventies.  Thomson then sold its American Book Company K-12 assets to D. C. Heath and Company in 1981.  The company was absorbed into D. C. Heath and ceased to exist as an imprint.  Any remaining K-12 assets of the American Book Company are now owned by Houghton Mifflin Harcourt Publishing Company, which acquired D. C. Heath and Company in 1995.

Supporting paragraphs: Bill Coffin Systems Failure
Answer: Palladium Books