Valve has announced a new controller optimized for Steam and Steam Machines. The gamepad will support the full catalog of Steam games released to date, and will include legacy support for older titles that lack controller support.
Valve's peripheral uses two trackpads, rather than the dual-analog setup common to consoles. Balancing the lack of physical sticks, Valve's controller uses haptic feedback, "allowing precise control over frequency, amplitude, and direction of movement."