Blockchain, cryptocurrency, and NFT provide a solution for the game industry. Game publishers could produce a game, but players are actual proprietors of it. A concept of play-to-earn is similar to an idea of proof-of-work. The work here comes from playing games and engaging in the game ecosystem, creating values for both players and the product itself. Therefore, the players deserve rewards for their contributions. We find that blockchain will disrupt the game industry in such a way as it did to the financial sector.