backgrounds of tiles not transparent!

I’m doing a tutorial for making a 2D RPG, but despite this tileset being a png, there’s a grey background behind everything and I can’t like have tiles on top of each other and I can’t really find anything about this online.



First place for any image question is always to verify the import settings. Select the PNG(s) in question and make sure you configured them properly to have alpha of the type you want.

I’m sorry, what do you mean?