What's non-commercial use?

Hi everyone, recently I had asked an artist about using his copyright-free music for a video game, and he said

“Sure, as long as its non-commercial”.

So, I tried looking up a bunch of definitions for it, but they were all different and inconclusive.

So, what does it mean for a game to be non-commercial? Can I put ads and IAPs in them?

I don’t want to betray the artist.

Non-commercial = no ads, no iaps and free to download.

Can’t make any money on the game.  Must be entirely free and earn you $0.00

Thanks for the info!

Non-commercial = no ads, no iaps and free to download.

Can’t make any money on the game.  Must be entirely free and earn you $0.00

Thanks for the info!