It is a Halloween variation of Solitaire. You need to pass all 100 levels. Use jokers and other bonus cards to simplify the process. You can get the bonus cards by clicking on the ghosts and other spooky characters. 

Play the game Spooky Tripeaks instantly, along with others like Fairway Solitaire - Classic Cards Game, Kobadoo Poker Cards, Memorybot, Infinite Heroes, Zero 21, Wild West Freecell, UNO Online, Tute, Tripeaks Solitaire 100 levels, Traditional Klondike Spider Solitaire