as we know in 2017 there was a very popular game called cryptokitties before the market increased very high (bull run) at the end of 2017, then now there is a game that is also popular, namely Axie Infinity and I hope if this is a sign for a bull run that will happen at the end of 2021, so the market can increase very high like what happened at the end of 2017.
cryptokitties were practically useless. when you get your own, you could just rent or sell.
axie allow you to play (at least you have some endless fun) while you can earn some tokens.
I think some NFT are more similar to CK then axie. Likewise games Footbattle.
Personally I don't want suggest to anyone invest in NFT unless very rare case.