As a photographer I have looked into copyright laws but I am not a lawyer - in the United States, copyright automatically granted to the author of the work as soon as it's created. Patents and trademarks are different animals entirely. However the tricky part comes in if you want to enforce the copyright. That requires the work to be registered within X days of being published with the US copyright and trademark office. Something like a 30$ filing fee. If the work is registered the author has the ability to file for civil damages since it is a registered copyright . However, I'm not the owner of the tiles, Sass is. It's not like him nor I would chase down people over this game. But it's the fact that people should request permission to use the work. Guess I'm jaded that people stole my photos and republished them without asking for permission nor gave credit. People seem to be selfish or rather entitled and do not think about the people who spend hours on the art that takes less than a minute to copy. In my case I travel to locations, I pay for my photo gear. I spend the time to get that one shot. That takes time and money, I should be allowed to put restrictions on the work I produce. Most don't even think about their actions. Since this isn't about my photography but more a conversation of thinking before one does and perhaps ethically ask oneself if that it's okay, if not legally, is the point. Like Sass said, I would love to see folks contribute to omega fire. A large part of this community only exists because we gave the assets to the community (which I have done with plug-ins and software I wrote years ago). I hope that clarifies my original intent of message.