The Witcher on X: "If you wondered how #TheWitcher 3: Wild Hunt plays on Steam Deck, you can rest easy! We're pleased to confirm that our game has been Verified for Steam
Better Gamepad Controls at The Witcher 2 Nexus - mods and community
Amazon.com: EasySMX Wireless Gaming Controller for Windows PC/Steam Deck/PS3/Android TV BOX, Dual Vibrate Plug and Play Gamepad Joystick with 4 Customized Keys, Battery Up to 14 Hours, Work for Nintendo Switch :
JACL - Just Another Controller Layout at The Witcher 3 Nexus - Mods and community
The Witcher 3 PS4 custom controller design concept on Behance