 Phantasmagoria was Sierra 's first game to use live actors integrated with computer @-@ generated backgrounds . About 600 scenes were filmed for the game , with the average scene taking about an hour to shoot , while others were significantly longer or shorter . The total filming took about four months , 12 hours a day , shooting six days a week . More than 200 people were ultimately involved in the making of the game . A total of $ 800 @,@ 000 was originally budgeted for Phantasmagoria , but it ended up costing $ 4 @.@ 5 million . The budget issues caused some friction between Roberta and Ken Williams . It was the first game made in a new filming studio built by Sierra in Oakhurst , California , the same location as Sierra 's headquarters . It cost $ 1 @.@ 5 million to build , and was overseen by studio manager Bill Crow , who said , " Phantasmagoria essentially started with the design and creation of the studio " . Sierra also developed computerized tools specifically to manage the shooting process , including software to digitize the video into the computer . Some of the software was built as the game was being made and needs for new tools were being identified . 
