DN8:Pulse is the sequel to last years "casual" bullet hell shooter. They've kept the evolving power-ups, being able to select your own path, the random soundtrack and pushed them forward with the use of stage3D.
Arrow keys / WASD / Mouse P to pause. ( Space to pause in full screen mode ) P.S. The game defaults to 30fps to enable it to run on the widest majority of machines. If you've got a good graphics card please go to Options / Graphics and turn it up to 60.