A particular fan noticed that several of the sprites -- namely Mega Man and Simon Belmont were from third-party companies that featured those characters on other systems. My response? The sprites contained in this mural aren't exactly representative of Nintendo as a whole, rather each character/item is representative of its respective game on an individual basis. For instance, Simon Belmont's sprite isn't necessarily intended to pay tribute to Konami's Castlevania franchise as a whole, instead, it's a tribute to the specific NES title where he appears! The same can be said about Bomberman and the Tetris sprite; the latter is deliberately colored in pale green, to represent the Game Boy version of the game.