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.
Gaming industry has a lot of users and it continue to grow because everybody wants to play game. Now a lot of projects want to connect cryptocurrency with gaming industry and attract a lot of gamers to cryptocurrency.
Now a lot of games use NFT tokens to attract more users to the game. They create own NFT collection and allows users to earn money on playing game.