ZUMA!

YES! I'VE FINISHED IT! :P Its addictive, how you have to shoot balls to form clusters of 3, in order to clear it. Some of the designs are plain diabolical, others are simple yet dangerous. Its taken me almost 2-3 months of playing it on and off, but finally I finished the 13th stage... Now I got other games to play... *rubs hands* :P