Mega Man II, known as Rockman World 2 (ロックマンワールド2) in Japan, is the second Mega Man game for Game Boy. Like its predecessor, Mega Man: Dr. Wily's Revenge, Mega Man II reuses content from the NES games, both graphics and actual level construction. The first four available Robot Masters and their stages are from Mega Man 2, while the last four are taken from Mega Man 3. The game also introduces many of Mega Man 3's features to the Game Boy series. Mega Man is able to slide.