Valve Steam Controller

Valve say 48 million players have used a controller on Steam

5 Awesome Features on the Valve Steam Controller

Steam Deck FAQ confirms you can use it as a giant PC controller

Steam Community :: Guide :: How to fix (most) issues with the Nintendo Switch Pro Controller™

Stadia Controller on Steam: How to fix an unresponsive gamepad

PC Games That Play Better With A Controller

Steam Community :: Guide :: How to set up an Xbox Controller

All Steam Users Can Now Play Games Using a PS5 DualSense Controller