Dude, the game itself isn't bad.

If I were to make this game, I would add more levels. But, each level would have different patterns, such as different shape trails, ziz-zaging motion, or heck, random motion that will make it impossible. Maybe random obstacles that will appear, and when clicked on, will give a penalty (less points, a previously clicked circle will change back to a unclicked state).

I see potential here. I wish you luck on this, and other projects Jonspiner.

Interesting, but not really sure the what the point is other than to make you dizzy. Your monitor better have a super refresh rate or you won't get anywhere.

Idea is good but game over is too fast. So I suggest to decrease score when player missed circles. So player will not die so much. You can do 1-2-3 stars for different score and finish level when all circles selected. Game session will be longer and not so frustrating for player.
And more interesting game art will be good also :)
Good luck.