Steam, Valve's online gaming hub and store, seems to now support coupon codes, Blue'sNews reports.
A Steam Support article walks users through the details of the discounts. Here's the full Q&A:
How many coupons can I use on an item?
You can use one coupon per item.
Can I use coupons on already discounted items?
Coupons are valid on discounted items unless specified otherwise.
What happens to my coupons when they expire?
Expired coupons will be automatically removed from your inventory.
How do I know which products the coupon can apply to?
Coupons in your inventory will have a button marked "View Applicable Games" in the detail panel for each one. Following this button will show you a page with available products that the coupon can apply to.
How do I apply a coupon during checkout?
When you add a valid item to your cart, Steam will apply any of your applicable coupons automatically. Prior to clicking "purchase," you can choose to save your coupon for later by clicking the "Change/Remove coupon" link for that coupon in your cart.
How do I know when my coupons will expire?
The expiration date is displayed in the detailed information for each coupon in your Steam Inventory.
We've contacted Valve for more details about how the coupons will be rolled out and implemented and will update when we hear back.