[Shaun]

Looking at the tiles closely, it doesn't look like it was copied. It looks like Eden's tiles could have been inspired, but it looks like it would have been more effort to edit the non-Eden tiles to the Eden tiles than to just make the new tiles like that. Really though, I've seen tiles resembling the styles you show in various games.

Look at the stones. I don't see the exact same patterns. The only similarities I see are brown rocks with a little bit of gray with shading.