A tweet from
states the developers of this first-person adventure game have been
informed by Valve that its game and other that use NFTs or other blockchain
technology will be kicked off Steam. The post includes an image of the section
of the Steam Rules and Guidelines covering the situation. Included on the list
of items you should not post on Steam is: "Applications built on blockchain
technology that issue or allow exchange of cryptocurrencies or NFTs."
asking Valve for a comment about this, but have not heard back