I LOVE King Cobra. His attitude fits my weaknesses almost perfectly.
Of his interactions though, my least favorite was being told I could easily be replaced.
It was really cool that his missions made you use certain settings to match his eyes!
I had some trouble playing with slower spirals, the game would visibly slow down when a lot of circles were on screen.
The outward setting causes distracting flashing on the sides of my screen, since it doesn't grow big enough before disappearing
Events are... weird. I can't click on them unless I stop the spiral and move the mouse, so I usually leave them off. Maybe if you could interact with them using space bar, it wouldn't be that bad?
I liked the spiral, but I found myself staring just off center from it, because I found the chunky shape of the center too distracting/nonhypnotic
As for the gem, maybe hitting space bar could just make it shimmer without giving points. I feel like the visual has potential, it just requires too much thinking to use. It looks really really cool as it's fading out though,
Some way to save presets would be really nice. I came up with one with various shades of red and gray, to make the gem more effective, it would be nice to have the option to save it for later.
I was already planning on sharing the game, when I got told to... and boy do I genuinely love being hypnotized into doing something I already wanted to do! I have a certain friend I think might really love this!