Over 170 people submitted art and music for part one. You can see everyone’s work gathered here (warning: this is a huge page with a ton of images), and vote for them here. Everything made is released under a non-commercial Creative Commons license. You can use it for your own non-commercial projects as long as you agree to the license and credit the creators. There is more information on each creators thread so be sure to check them out.
Have fun playing the entries, voting, and using some of the assets for your own games.