Chris Hu on 18 April 2017
Actually the Sega Master System controller wasn't that bad it was just vastly inferior to the NES controller and its built quality and durability where on the poor side compared to the NES controller which is one of the most durable controllers ever build. As far as worst controllers it has to be the N64 controllers and all Atari system controllers they where all poorly designed and not very durable the worst out of those is probably the Atari 5200 controller.
