File Extension PGC File Format Egypt Solitaire Back PGC stands for Egypt Solitaire Back. This was last updated in March 2012 By Margaret Rouse Browse File Extensions Alphabetically: A B C D E F G H I J K L M N O P Q R S T U V W X Y Z # Ask a Question. Find an Answer. Ask your peers a question about this file extension. Ask a Question Does Windows 8 have simple games like Windows 7 (solitaire, mahjong, etc.)? BrainsBreaker Puzzle Could Egypt violence could leave its and other countries' offshore IT reputations in ruins?