Much like the first game, the NES version of Double Dragon II features many drastic differences from the original arcade game. Unlike the first NES game, the game can now be played cooperatively with a second player. There are two different 2-Players Mode, A and B: the latter differs from the former, in that both players can hurt each other with their attacks. There are also three difficulty settings, which also determine the length of the game in the English version. The final mission is only available on the hardest difficulty setting.
