XNA Sprites were all created by XNADevelopment.com (that's me!) and are available for use in your projects. It is always great to let me know where and what you are using these images for and of course I appreciate any credit you give to me in your projects, but really, feel free to use them how you see fit (but obviously, don't sell them). Hopefully these sprites can help your get your projects finished. While these images aren't top quality, they might just be what you needed so that art assets don't stop your project in it's tracks. Have fun!