This is a solitaire puzzle game using money! Switch the coins wisely, and try to pile the same coins up. For example, if you pile five 1 cent coins, they turn into a 5 cent coin. Two 5 cent coins turn into a 10 cent coin. Every time the value change happens, the coins become 1 cent - 5 cent - 10 cent - 25 cent - 50 cent > $1.