Solitaire Master 4 Features favorites like Klondike and Free Cell, along with completely new games -- more than 500 total games 12 new card faces, 150 card backs, and 700 backgrounds are included system requirements. pentium ,16 mg ram,windows 95,98,me,2000,xp,cd-drive256 color display or greater640x480,800x600124x760 display,180 aprox,hard drive space