Now many games are using NFT for their development. To attract a lot of users NFT games are using airdrops like this
https://twitter.com/spacegrime/status/1396545308809601025. If you will check the results of airdrop you can see that airdrops are very effective and can attract a lot of users to the gaming comminity.
Usually, players only spend money on games, as all game developers want to make money on players. It is good that thanks to the appearance of NFT now even players can earn money on their favorite games.
The opportunity to earn money on games attracts many gamers to the cryptocurrency, this is one of the main reasons for the high popularity of NFT.
Now NFT is actively used in games, after the launch of CryptoKitties, the popularity of NFT in games does not decrease, as this is a great opportunity for earning money.