When you’re close enough to an object or an enemy, you can press the jump button twice to auto-target them. Sonic has a special new ability added to his arsenal in Sonic 4: the homing attack. If Sonic takes a hit from an enemy, though, he’ll lose all the rings he’s carrying and he’ll want to grab them quickly-lest he be attacked again and lose a life. He can also perform a spindash, a maneuver that allows him to curl up for a temporary speed boost. Sonic can jump to defeat enemies, ricochet from spring to spring, and interact with the environment in various ways.
Run through levels at blistering paces, fight off enemies in typical platformer fashion, collect rings, and nab the occasional power-up.
Longtime fans will know exactly what the gameplay entails.