Thanks for the feedback! I agree, having the ability to rotate by clicking on a block would remove the need for a keyboard at all for core gameplay, and make the game much more mobile-friendly!
The pulse speed also definitely needs a slider that lets the player have more control over the pace they want. I band-aid fixed this for some levels like the four-leaf clover, since it was painfully slow haha. But the pulse should really move at a speed proportional to how far it's about to travel, perhaps.
Thanks for playing!