I played for about half an hour and got 6000 points. It took me some time to realize that I should match my colour to that of those big circles so as not to get damaged by them. Also I thought that the game would keep getting harder, but after they appeared, it seems like the difficulty had peaked, but it wasn't hard enough to kill me. So, potentially, I could play forever, cause very time I was about to die, I got inexplicably healed for some reason, and I had to deliberately stop shooting to get myself killed, cause the game was getting boring by that moment.
It looks and sounds neat, but the graphics are too minimalist for my liking.