00518nam a22001217a 4500020002500000082002000025100003600045245005200081260004800133300004000181500005000221650012500271  a9781401878641 (pbk)   a794.81526 bCAS  aCastillo, TravisaJeannie Novak  aGame development essentials bgame level design  aClifton ParkbDelmar Cengage Learningc2008  axxii, 307 p.b: ill.c; 25 cm.e+CD  aIncludes  bibliography, references and index.  aComputer games--ProgrammingaComputer games--DesignvGame designvPaper designvEnvironmental artvAsset creationvRIMS