This is... ok! I'm not sure if this is your original idea or not, but either way, I think it's a neat concept!
The controls should probably be listed somewhere. I had to just kind of guess how to start the game because I had 0 clue what buttons it was asking me to touch. Once I pressed enough random keyboard keys and started, it was pretty straightforward.
Another issue is that the "paddle" is actually really hard to keep track of. Something about how small it is + the colour, I'm having a really hard time keeping track of it's exact location. Maybe more contrast is needed? it's pretty similar in colour to the ring it's on. Hell, I'm not even sure if the ring is necessary, it might be fine just against a black background.