Razer's already solidified its presence here at CES, but it obviously left the best for last. The peripheral outfit has hooked up with Sixense to bring motion sensing controls to PC gaming, and it utilized a wild demo of Left 4 Dead 2 to showcase the device. We hate to link everything to the Wiimote, but if you're desperate for a quick n' dirty explanation of this, it's sort of like a Wiimote / Natal mashup, but just for PCs. Users will find one-to-one tracking, and while further details were few and far between, we're told that devices based around the tech would be launched later in the year. Enough chit chat -- hop on past the break for an unashamedly gory clip of this thing in action.