Valve and Razer formally agree to support Razer Hydra motion controller in Valve’s four most popular titles and two upcoming ones.

A little over two years ago, Valve and Razer announced a partnership for their Sixense high-precision motion controllers. During CES 2010, attendees were able to experiment with a prototype motion controller from Sixense to control Left 4 Dead 2. Sixense TrueMotion controllers were later released by Razer last June as the Razer Hydra.

Now you’re thinking with controllers.

This Game Developers Conference (GDC) fast forwards us to almost a year after the launch of the Razer Hydra. The price for the controller has dropped $40 to $99.99 at some point between then and now. Valve has also announced that support would be extended from Portal 2 and Left 4 Dead 2 to include Half-Life 2, Team Fortress 2 and upcoming Dota 2 and Counter-Strike: Global Offensive.

The fishiest part of this whole announcement involves the Steam Box rumor from a few days ago. Valve appears to be very focused on the best portions of console gaming for the PC all of a sudden. I could easily see motion controls be used to support The Steam Box or whatever it might be called — especially if it were used for more than just gaming and by more than just gamers.

So what do you all think?