Gamepads
Many players prefer using gamepads (aka controllers or joysticks) over a keyboard and mouse.
Built-in support
Minetest has some experimental built-in support for gamepads but it quite broken and doesn't work on most hardware. Even when it does work, it doesn't support using GUIs.
There's plans to improve this in the future, but for now it's recommended that you use an external program for controllers, and not Minetest.
External programs
AntiMicroX
AntiMicroX is a graphical program used to map gamepad keys to keyboard, mouse, scripts and macros. You can use this program to control any desktop application with a gamepad on Linuxpenguin and Windows window.
https://github.com/AntiMicroX/antimicrox/
Todo: tutorial
Steam Input
You can bind your controller to Minetest controls using Steam Input. Base your layout on one for Keyboard and Mouse.
Todo: tutorial