On Blind Boxes that have a Stamp Card, pulling a duplicate of an eligible item (usually a Pal) turns it into Stamps instead of a second copy. You spend Stamps on that Blind Box's Stamp Card to get rewards, such as a Pal you're still missing. Only some Blind Boxes have a Stamp Card.
How do I earn Stamps?
Pull the Blind Box. If you get an eligible item you've already collected from that Blind Box, it converts into Stamps during the reveal. There's nothing to press, and the duplicate doesn't go to your inventory. How many Stamps a duplicate gives depends on the Blind Box: the Stamp Card's info shows Stamps per Duplicate for each rarity.
Where is my Stamp Card?
Open the Blind Box. The Stamp Card button is on the Blind Box screen, along with your Stamp total. Each Blind Box has its own card.
How do I redeem Stamps?
Open the Stamp Card.
Pick a reward you have enough Stamps for. Rewards you can't afford yet are dimmed.
If it's a choice reward, use Choose a Reward to pick the item you want. Items you've already collected from that Blind Box can't be picked.
Press and hold Redeem to confirm.
Some rewards let you choose; others give a random item you don't own yet. The reward says which kind it is. You don't need to fill the card first.
What happens to leftover Stamps?
They stay on the card. Redeeming only spends that reward's cost. If you have more Stamps than the card can display, the extras are still saved and shown as extra Stamps above the card.
Does redeeming change the Blind Box?
The odds don't change. The item you redeem stays in the Blind Box, so you can still pull it, and if you do, it turns into Stamps. The redeemed item does count toward that Blind Box's collection progress and completion rewards, just like a pulled item.
I already own everything. Can I still use my Stamps?
Yes. Once you've collected every item a reward covers, that reward opens back up: a random reward can give an item you already have, and a choice reward lets you pick any of its items.
Can I use Stamps on another Blind Box, or get Gold for them?
No. Stamps only work on the Stamp Card where you earned them. They can't be moved, exchanged for Gold, or refunded.
Do Stamps expire?
Yes. You can only redeem while the Blind Box is running. When it ends, its Stamp Card and any unused Stamps go away, so spend them before the timer runs out.
Can a Blind Box have both Stamps and Recycling?
Duplicates that become Stamps can't be recycled, because they never reach your inventory. Other items from that Blind Box may still be recyclable.
Still need help?
If your Stamp total looks wrong after a pull or a redemption, contact Support with the Blind Box name, the time, and screenshots of your results and Stamp Card.