As in the title, It's possible to build a game using other project's ntf? How can I do that?
For example, a game where in the 3D space, players can add frames of their own ntfs in his room.
Yes, you just have to get the person's NFTs given their wallet address.
To do this, make an API call to the Blockchain API on their "Get Address's NFTs" endpoint. You just have to supply the wallet's public key.