The goal of the game is to collect the entire deck of cards into four foundation piles strictly by suit, starting from Ace and ending with King. On the tableau, cards can be moved onto each other in descending order, strictly alternating colors (for example, a red six onto a black seven), and empty spaces can only be filled by Kings. There is no stockpile in Yukon — all 52 cards are initially dealt onto the board. The main feature of the game: you can take and move any face-up card along with its entire "tail" (stack), regardless of the order of the cards lying on top of it! The most important thing is that the bottom-most card being moved fits the target card according to the rule of alternating colors and descending order.
Moving cards: Cards can be moved with a single tap/click or by dragging and dropping.