I was searching for something and I found this.
http://forums.graal2001.com/forums/s...ght=tree+tiles
Those were tiles from a PW being made last year called Beyond Legend. I don't know what happened to it, but a lot of the tiles on that thread are in those screenshots
Since I have no idea if the people who were making this server had some arrangement with you, I'm not going to say your stealing it. I'm just saying that they are the same tiles.