Walmart, the world's biggest retailer, is set to sell NFT collection Pudgy Penguins' toyline in its 2,000 stores across the U.S. Each Pudgy toy provides access to Pudgy World — a multiplayer digital social platform where users can build their "Forever Pudgy" characters, play mini-games and interact with other users. Pudgy World is based on zkSync Era, an Ethereum Layer 2 blockchain network. NFT holders will receive licensing royalties for each corresponding toy that is sold at Walmart, Pudgy Penguins said.