Trefry, Gregory. Casual game design : designing play for the gamer in all of us / Gregory Trefry. - Burlington, MA : Morgan Kaufmann, c2010. - xviii, 245 p. : ill. ; 24 cm. Includes bibliographical references and index. ISBN: 9780123749536 (pbk.) 0123749530 (pbk.) LCCN: 2010287300 Nat. Bib. No.: GBA992178 bnb Nat. Bib. Agency Control No.: 015375751 Uk Subjects--Topical Terms: Computer games--Design.Computer games--Programming. LC Class. No.: QA76.76.C672 / T755 2010 Dewey Class. No.: 784.81526