Plupon is a short action puzzle game created by the Japanese Yoshio Ishii.

Your goal here is to combine three falling blue balls with numbers to merge them and create sums of 10 or 20. Simply click a ball to select it and click again to unselect it (click the background to unselect all balls). Sums over 10 or 20 will decrease your health bar at the bottom of the game window. Sums below 10 simply create a new ball containing the sum.

Your health bar is also reduced by the number on each ball that crosses the dotted line at the bottom of the screen.

Nice polished, very simple and very short (6 levels only are available), Plupon is a pleasant way to fill a coffee break.

Have fun!

Update: if the original link doesn’t work, try this temporary link.