Nice game!
It took me some time to figure out that I can control the direction of that spinning thing, but after that it was very fun trying to figure out the next hitting position ¦3
I would suggest locking the mouse pointer to the canvas, otherwise it is too easy to accidentally leave the game window and click somewhere else (even in fullscreen with multi-monitor setup). And maybe catching the spinner with the same button as the throw would make it more intuitive (and less disruptive for WASD fingers).
The visuals and sounds are great!