Unlike most stock art sellers, our licenses don’t have any hidden clauses about the art’s usage. Some sites prohibit the art to be used in apps, or limit the number of downloads the app can receive before paying a much higher price. Here’s the only thing you CAN’T do: resell the art template itself. Everything else is fine by us. Commercial or personal usages are covered under the same low price. We only ask that you limit the art to a single app, or purchase one of our extended licenses to cover multiple apps. It’s “Buyer’s Choice” with this collection. You can import the artwork to nearly any image editing program, as well as Tiled, the free tile map editor. In fact, .tmx files are already included for the platform sets so you can begin right away if you have Tiled installed. So whatever your preferred software, this bundle is safe to use. The artwork has already been exported for Adobe Acrobat (.pdf), Corel Draw (.cdr), Adobe Illustrator (.ai), Encapsulated PostScript (.eps), High Quality Transparent PNG, High Quality JPG and in the case of the platform artwork, you can begin creating maps right away with the Tiled format (.tmx). Source.