Zero returns for his latest mission on Game Boy Advance. Rockman Zero 4 (most likely to be called Mega Man Zero 4 in America) once again pits Zero and friends against Neo Arcadia. Making use of the Buster Shot, Z Cyber and Zero Knuckle weapons, you'll work your way through the expected set of stages, each cumulating in a boss fight. You can also collect chips to customize your weapons. A new difficulty setting should make for an easier overall experience this time around.