The Cross Collection Challenge will feature and use these collections:
- Bundesliga 2020-2021 Season Celebration NFT Collection by Topps (Challenge Window #2)
- Topps Series 1 – 21/22 Bundesliga NFT Cards
(Challenge Window #1, Challenge Window #2)
- Topps Series 2 – 21/22 Bundesliga NFT Cards
(Challenge Window #1, Challenge Window #2)
- Topps Series 3 – 21/22 Bundesliga NFT Cards
(Challenge Window #1, Challenge Window #2)
- Topps Series 4 – 21/22 Bundesliga NFT Cards
(Challenge Window #1, Challenge Window #2)
- Topps Kickoff – 22/23 Bundesliga NFT Cards
(Challenge Window #2)
- Topps Series Challenge Rewards – 21/22 Bundesliga NFT Cards (Master Challenge)
- Topps Limitless Challenge Rewards – 22/23 Bundesliga NFT Cards
(Master Challenge)