nullpointer is a digital artist who experiments with algorithmically generated digital imagery. Playing around with fractals, he decided that rather than simply exposing people to pretty pictures, he wanted them to interact with the imagery. And being a serious fan of old-school shmups, he created this game in which you interact with the images by (what would you expect?) shooting them.
The opponents in the game are controlled by genetically-evolving algorithms, and become smarter and more intelligent about dealing with you over time. In other words, this may look like your usual shmup, but it has high ambitions from both a technical and artistic standpoint.
And it's free... As a grants-funded artist, nullpointer has the unusual luxury of not needing to consider commercial realities in his work...
N.B.: Manifesto Games likes to link to free games that we feel are particularly noteworthy as a service to our customers, even if they don't make us any money, darn it.