Hello, can this art be used in a commercial project?
Viewing post in 16x16 Overworld Tileset comments
Sure, it's creative commons 4.0 so you can use it any way you like as long as you mention the author somewhere (You can read more here https://creativecommons.org/licenses/by/4.0/).
If you'd need some more tiles for your game in this tileset let me know and I'll see what I can do.