1. May I use these textures for free? Do I need to pay royalties?
Yes, the textures may be used for free in 2D or 3D computer graphics, movies, printed media, computer games and 3D models. When bundled with a 3D model or scene you are allowed to sell it as a package.
No permission is granted to sell or redistribute the textures as a competing product, even when the images are modified. Please do not redistribute or sell textures by themselves, or as texture packs, or as clipart, or as material packs, or as scrapbooking packs.
You do not need to pay royalties or a usage fee. Textures may be downloaded and used free of charge.