TOKYO -- Some of Japan's biggest gaming companies are quietly bringing blockchain technology to their virtual worlds even as the fervor for cryptocurrencies -- especially their use in video games -- is cooling in much of Asia.

Japan's video game industry is wary of turning off players by diving too aggressively into crypto, while gamers say they do not want the real world worry of having to earn money encroaching on their pastime. (Photo by Yuki Kohara)
Square Enix aims to monetize NFT project while 'play-to-earn' games sour globally