6. Backbone
![Backbone-mobile-game-controller](http://curiousmob.com/wp-content/uploads/2021/06/Backbone-mobile-game-controller.jpg)
This one is exclusively for iPhone. If you want to enjoy a next-level gaming experience on your iPhone, this one is a must for you. This one is particularly useful for you if you have an Xbox, PlayStation or a PC. The app that comes with it is amazing as well. Now play all your favourite games on your iPhone and that too with better comfort and a better screen than Nintendo Switch.