Collect your favorite fighters and moments, both past and present!
Trade with UFC fans from around the world - anytime, anywhere!
Join in-app Challenges for a chance to win physical Topps UFC hobby products!
Build your collection
Collectibles Gallery
About the app
UFC Collect by Topps
UFC Collect by Topps (formerly UFC KNOCKOUT) is a free digital collectibles app where UFC fans around the world can collect their favorite fighters, moments and more. The app offers various collector-based features, trading, and Challenges where users have a chance to win physical Topps UFC hobby products. App is available worldwide starting November 11th, 2026.