On the basis of the original upgrade rules of the game, the number of cards from the original 54 (a card) increased to 108 (two cards), to take the number of points per game to determine the number of upgrade stages of the game,
Super version of the double-liter to the ordinary version of the rules of the two-liter game based on the main party can upgrade the highest level from the original 3 to 6, and increase the anti-gold coins doubled the new rules, the game process more
The "pair" "even against" "anti-master" and other new rules of the game, so that the game's brand-type combination of richer, the game results are more unpredictable.
The double-liter game, also known as the tractor upgrade, was a derivative version of the earlier upgrade (a card) game, which is now very popular nationwide.
