 Phantasmagoria quickly became the best @-@ selling game in the United States , and was Sierra 's best @-@ selling computer game to date . It grossed $ 12 million and sold 300 @,@ 000 units during its first weekend of release , and debuted at fourth in PC Data 's August 1995 list of top @-@ selling computer games for MS @-@ DOS and Windows , based on a survey of 21 national retail chains . It followed MechWarrior 2 , Microsoft Flight Simulator and Myst . By September it had reached number one on the list among computer games , and was ranked third in best @-@ selling overall computer software , following Windows 95 and Microsoft Plus ! InterAction , a magazine published by Sierra On @-@ Line , wrote : " Never before has a new product jumped to number one on the charts so quickly . " By the end of December It remained at number three among overall software , and number one among computer games , and by January it was estimated as many as 500 @,@ 000 copies had been sold . 
