Getting seven Chaos Emeralds in Sonic’s second outing can be a painful affair, but the reward is so very sweet. Grab 50 rings, jump into the air and Sonic will transform into the glowing yellow Super Sonic – an even faster version of himself with invincibility. It isn’t tough to compensate for the drawback, a loss of ring per second, as Super Sonic’s power turns otherwise difficult challenges into trivial matters.