Nintendo has Never Made a Bad Game.

[Roar_Of_War]

Nintendo rarely makes flat out bad games, but they have made bad games before. It depends on what you view as 'bad', though.

Amiibo festival is hot trash and even the developers admitted they just wanted to make amiibo.

Star Fox Zero and Metroid: Other M are looked at as bad by a large amount of people, but they're more so divisive. They don't have 'bad' scores on Metacritic for example, they have above average and good scores (respectively) that fall short of past games but are still technically above average/good.

Skyward Sword has fantastic reviews but some people clearly dislike it or were disappointed with it...but most don't think it's a flat out bad game and by reviews it's actually a technically 'fantastic' game. Some people hate it, but some people love it or like it too.

The main point is that by numbers, yeah Nintendo rarely makes flat out bad games, but it's highly opinionated depending on what you think is a bad score, and if you agree with said scores. But most certainly they have made bad games before, but what those games are vary subjectively in most cases.