Double down with Double Freecell. This version of the card game freecell is played with 2 decks, instead of one!
Win Double Freecell by getting all whopping 104 cards into the four foundations in the top right. Start with an Ace, and build up to the King--and then put another Ace back onto that very same foundation. To make this game a little more manageable, you have 6 freecells (instead of the usual 4) to play with. But, still be careful! Don't move any cards into the freecells without first plotting out an exit-strategy for that card.