Yukon is a type of patience game played with one deck of standard 52-cards set which has no stock pile. All cards are dealt at the beginning and some of the cards are dealt face-down. Aim is to build four foundation piles up from Ace to King.

The difference in this version is that group of cards can be moved between tableau piles if starting and target cards match according to the rule. Rest of the cards in the group are not required to be in any order.

The variations have following differences
Yukon - Cards in tableau piles are played in descending order, alternate colors.
Russian - Cards in tableau piles are played in descending order, same suit.
Alaska - Cards in tableau piles are played by suit in both ascending as well as descending order.

Features
- Save game state to play later
- Unlimited undo
- Game play statistics