I had a lot of fun playing this! My main recommendation is to try and streamline the controls a little more.
Specifically, if you want the player to use WASD with one hand, and "," and "." with the right hand, that means I can't use my mouse. think the best option would have been to remove the mouse clicking altogether, and bind each different shape to a number so you can just press the number keys to really quickly swap between each piece.
Overall great work, well done!