A hard afternoon surfing the internet can make you feel as if your brain is turning to mashed potatoes, but there’s a way to turn that all around.Isoball is a brain-teasing flash game designed to test your mental resources. The object is to guide a little red ball into a hole placed somewhere inside the play area. You’re given a limited amount of blocks and ramps of various descriptions with which to complete your task. Though it sounds easy in description (and sure enough it starts out that way), after a few introductory screens, Isoball will have you racking your brain for the next move. And maybe it’s the hypnotic music or the stripped-back graphics, but there’s also something curiously calming about it as well.tinyurl.com/isoball3