8BitDo Zero 2

It's small, fits in every Pocket, feels pretty high quality and works flawlessly

It is exactly what it purports to be: a very small controller that is very good for 2D type games. It works fine with tablet or phone or even my PC. It's even smaller than I expected it to be, but especially with the available phone accessory it's entirely usable.

I got this for use with language-learning app Aoede. The shoulder buttons are perfect for clicking Next Sentence and Listen, the two primary controls you use while reading.

Micro yet decently comfortable. If you play 2 player games on the go a lot, and want a D-pad instead of a joystick, this is for you

Its a ridiculously specific niche, but fulfilled well

i love it