Joystick (Elecom Wireless Gamepad,GUID:03000000b80500000610000010010000) isn't yet supported by the SDL2 game controller API · Issue #4253 · PCSX2/pcsx2 · GitHub
Part 3: Keyboard and Joystick Input — Sil Tutorials
LearnOpenGL - Breakout
xbox - Problems working with several gamepads simultaneously in Unity3d - Stack Overflow
mac OS gamepad does not map SDL properly · Issue #26544 · godotengine/godot · GitHub
Part 3: Keyboard and Joystick Input — Sil Tutorials