If the game freezes, just click inside it (games can get unresponsive if you click elsewhere on the page).
With the help of mouse aim the cue (stick) towards the discs. Hold the mouse to raise the power to hit the discs and pocket them into the holes. Pocketing the discs makes you gain more points. Reach the target points within the time limit to move on to successive levels.
This game is played with mouse only.