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.
I agree that airdrops in gaming industry are very popular. Just see how many people participate in airdrops and how popular are social networks. I think that collection of rare NFT is a good way for promotion of different games to attract attention of gamers to new games.
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.