The Polynomial is an abstract themed musical space shooter (but it also got non-shooter mode). The content is generated mathematically and animates to your music or microphone input; there are 4 animators and 37 arenas to choose from (12 arenas in free demo). It also includes built-in fractal editor that you can use to create artwork, which can be rendered at any image size (up to 8192×8192). There is a lot of parameters that you can customize. (via dmytry.com)