It took me quite a while to figure out the controls and get the first rock right. But it was relaxing. On the second level I ran out of time after placing the first rock. This is a great idea for a mediation game, and the sound is truly relaxing--one of a few games where I didn't turn off the sound! I would recommend a longer time, or an option to turn it off to make it less stressful to work towards perfection. Love it!