Using NFT's for things other than art.

My question is how to approach using NFT for games let's say I created a game on unity and I have riffle how do I tokenize or make an NFT out of it.

Let's say each riffle have different attributes like accuracy, fire rate, and damage, do I store those data off chain or on chain? if storing it on chain is better what about NFT marketplaces like opensea as far as I know it reads off chain data only?

And what about the model itself do I keep it within game files like normal games or upload it to IPFS?