Razer Hydra

The Razer Hydra (previously known as Sixense TrueMotion) is a motion and orientation detection game controller developed by Sixense Entertainment, a company founded in 2007, in partnership with Razer USA. It uses a weak magnetic field to detect the absolute position and orientation of the controllers with a precision, as stated by its developers, of 1 mm and 1°; it has six degrees of freedom. The current release is wired, but a wireless version is in development.

The game controller has been showcased many times with different video games and 3D modeling applications, most prominently Counter-Strike: Global Offensive, Portal 2, Team Fortress 2, Left 4 Dead 2, World of Goo, Call of Duty: Black Ops and Half-Life 2.

A partnership with Valve was announced, and said company appears as a partner, alongside Razer and Intel. No word has been said by the game developer but they helped Valve modify Left 4 Dead 2 and other Valve games to be played with the Razer Hydra Motion control, and an official SDK is available for download in Steam's 'Tools' page.