Circularix 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.
