If the game freezes, just click inside it (games can get unresponsive if you click elsewhere on the page).
A physics based game, you defend against falling marbles. Takes a long time to master. Involves many realistic physical concepts.
Place mills (green) to earn money.
Place obstacles to damage marbles.
Mouse Drag & Drop to position
Right Left arrows while holding mouse down to adjust
ESC for menu
C for camera marble