1
The Steam Controller costs $99 USD, launches May 4th via Steam, and includes a magnetic charging puck that supports up to 4 controllers at 250Hz with no latency degradation as more devices connect.
2
It uses TMR (Tunnel Magneto-Resistance) thumbsticks — more durable, more accurate, and lower power than Hall effect sticks — with firmware offsets built in to counteract magnetic interference from the charging puck.
3
Grip Sense detects whether hands are on left, right, or both grips (capacitive, not pressure-sensitive) and can be used to activate a 3-DoF gyroscope for precision aiming in shooters.
4
Valve designed it primarily for Steam Deck parity so users docking their Deck can switch seamlessly, and thousands of existing community controller configs for Steam Deck work on day one.
5
Valve will share external geometry files publicly (like they did for Steam Deck), partner with iFixit for replacement parts, and the controller supports up to 16 controllers across 4 pucks tested internally.