It makes little sense to implement left mouse button for attack if the attack doesn't follow the mouse pointer. Easier to use the keyboard in that case.
Game is okay, very similar to your previous games. Would have been better with sound and a more elaborate pinball machine. There is a bug where the ball gets stuck in the grey areas at the top. Also, I would advice against publishing unfinished games. It will hurt your rating and it's kind of frustrating for the player.
Okay, eventually the pace picks up nicely (crystals earned), but the game lacks depth. You can't spend your crystals on anything, lower tier buildings become worthless quickly and there is a general lack of upgrades. I hope you keep working on it, but right now there's not much that makes me want to keep playing.
I can confirm that the game is way too slow. My total playtime is 18 hours, with 3 hours of active gameplay, and I would get only 19 crystals if I'd prestige now.
Only four elements: coins, balloons, mines and springs. Would have liked a little more variation. Once you get the upgrades going, a single launch takes forever and the game gets pretty boring.
Thanks for your comment! Added hotkeys for units and spells