2x Drop Coupons double the rate at which items can drop when you defeat a monster. So if an item normally has a 5% chance of dropping, there will be a 10% chance when you have a 2x Drop Coupon in your inventory. 2x Drop Coupons can be purchased in the Cash Shop under the Game > Convenience section.
When purchasing a 2x Drop Coupon please first take note of the effect the drop card has, as well as the activation times for the card. The activation time and the duration of the cards will be placed in the description of the coupon itself. Please make sure to read these descriptions before purchasing a 2x Drop Coupon.
There are special four hour and one day 2x Drop Coupons available for a one-time use. As soon as the coupon is purchased, the 2x effect will activate for the next four hours or one day, respectively.
To receive the 2x Drop effect, the coupon must be placed in your character's item inventory.
To transfer the item to your character, make sure to double-click on the 2x Drop Coupon from the "Cash Inventory." The item will then be moved to the "Cash" tab of your item inventory. The 2x drop effect will only be active on the character that has the coupon.
The 2x Drop Coupons purchased from the Cash Shop do not stack with one another, meaning that if you buy two 2x Drop Coupons, you will not receive 4x drop.
However, the coupons stack with certain 2x drop in-game events and with game functions that may also provide an increased drop rate. Not all in-game drop multiplier effects will stack, so please refer to the item description of the drop effect before purchasing a 2x Drop Coupon.