Blockchain games are not necessarily to be ERC-20 tokens running on Ethereum blockchain. It can be any on chain game running on any blockchain.

Have you ever played blockchain games? What do you think about them?

Yes. Check my signature. Its a highly transparent one.

It seems like you're talking about gaming as in gambling and the thread is more about gaming in the sense of video games not gambling.

true. there are some gamblings working with blockchain. but we are talking about video games