I am not sure about such investments, NFT for gaming is just hype now, but this sphere is not a limit for Non-Fungible Tokens. It is better, to my mind, to look for projects where NFTs are used for documents and data but not for just entertainment.
But, on the other hand, I can be mistaken as we don’t know the duration of this hype so if you can earn now then try.
I'm having that feeling too but while the hype is there, I'm happy to have been with the hype and aware of it. I've managed to earn already and got my capital back. What I don't like about this game lately is their trouble with the game, the lag, and the server that can't be fixed immediately. About your opinion that NFT should be just documents and data. I think that's a different form that no one will buy on unless those data and documents you're telling are very rare and got some value to go up. But through NFT games, play to earn, this gave some good style of making the project alive and that's why it's being on hype and hopefully if the hype goes down, the game will continue and its token will be tradable in many exchanges.