Write Game Specification document

Our project is at requirements capture phase. We are looking for a BA who will be given high-level details of a game. The BA's job is to create a detailed specification document based in the inputs provided. The detailed specification document will be given to the product development team who will take it forward from here. The game's detailed design and test cases will be derived from the specification document. The BA must have knowledge of crypto currency, NFTs and turn based games. The game is targeted for mass adoption, does not require any special skills and is meant to run on regular phones and web.

Please respond only if you have experience in this area. Kindly show evidence that you are a good fit.