BOOSTER
*Can be purchase on item shop
960 cash = x2 booster (3 days)
1440 cash = x3 booster (3 days)
***limited only (sales period)
*Can be acquire as 7th day bonus reward
*x2 and x3 booster
can't be use at the same time, if you are currently using x2 booster, and use x3 booster, the first booster (x2) will dissapear and x3 booster will be applied.
