Challenges in the Panini NFT platform are the same concept of Set Completion in the physical world, but consist of specific cards that need to be collected in a defined period of time. If you are able to collect the required NFTs for a given challenge when the timer expires, you are entitled to the reward NFT, which can only be obtained via the challenges. Challenge reward NFTs are minted to the number of challenge winners post its completion - they are usually short prints!
From time to time NFT challenges will also have additional prizes attached to them.
In order to get started select the challenge you like to participate in, and the cards you already have will be fully visible, while the cards you need to collect will be grayed out. Open new packs or look for the required cards on the marketplace to get the missing cards added to your collection before the challenge timer ticks. And once the challenge completes, the challenge rewards are yours to claim.
More challenges, more rewards! So, get ready to continue the chase because it's Game-on!