Simply, access the riot site and find your coupons bar. All the latest

coupons will be shown out, note that the coupons bar will only appear when you have coupons available.

Normally, one discount code is only applied for one offer. However, If the users put a vast of items in their cart, it is easy to use one coupon code to purchase items. It depends on riot's policy, you can contact riot via mail for your reference.

Usually, Coupon Stacking is not allowed at riot. However, the store will surely give out notice if available.

Our advice for you to use riot Coupon effectively is to choose the right day.
Like thousands of other consumers, the time of promotion is when they choose to
shop at riot, so take advantage of coupons released on those days to save.