Make them all glow, can you?

Instructions:
 Click on orbs arranged in a grid to make them all glow. Clicking on an orb 
changes its state from unlit to lit or lit to unlit along with the 
neighboring orbs. Turn on all the orbs to pass a level with as few moves 
as you can. There are 9 levels, each with more orbs than the previous one.
Two difficulty modes. In the easy mode, all orbs are unlit in the beginning 
and in the hard mode, some orbs are already lit to make things difficult 
for the player.
Author:
MUKTO SOFTWARE LTD.


My comment:
I played this game a several months ago, but forgot the URL. Today I suddenly 
found this game. So, I thought it'd be easy to find if I share this game here.