I consider Super Mario Bros. 2 to be one of the most unique and creative Mario platformers around. Even so the complaints about it being no more than a lazy Doki-Doki Panic skin are plentiful but how accurate are those critiques? According to a timely Retro Game Mechanics Explained video, apparently Super Mario Bros. 2 does some creative sprite magic to add the Mario characters to the game in that they use two sprites to get more than 5 colors for each character(4 colors per sprite being a hardware limitation of the NES).