Have you read the licence page carefully? Answer to your exact question is available on the "Further Explanations" section, just a bit below the licence information :)
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It doesnt matter what the further explanations says. When i go to creative comman it say.
NonCommercial — You may not use the material for commercial purposes.
That mean if i release a commercial game with your assets you can alwase catch me and claim money. Else you would have used the propper licence.
I like your assets alot and i see them alot of time when i search assets but this is the only thing resisting me using your assets.
Yes, and there is a link to the explanation of "supplement permissions" on that page. With CC licenses you can't restrict terms of the licence but can only give more permissions. So I had to choose a non-commercial licence, then give permission to use the sprites for commercial projects with the condition of that said projects can't be anything blockchain-related. So in short, you are free to use the sprites in commercial projects but the project can't be a p2e game, nft project, web3 thing, or future inventions in the blockchain technologies etc. I hope that clears things.
But if you still have doubts, here are some commercial games that use my sprites:
Let me know if you have any other questions!