Erik Andersen, Yun-En Liu, Rich Snider, Roy Szeto, Seth Cooper, Zoran Popovic. On the harmfulness of secondary game objectives. In Marc Cavazza, Katherine Isbister, Charles Rich, editors, Foundations of Digital Games, FDG'11, Bordeaux, France, June 28 - July 1, 2011. pages 30-37, ACM, 2011. [doi]
Abstract is missing.