"We see 'Half-Life 2' as a new benchmark for the type of amazing experiences that can be delivered on the Windows® platform, and DirectX 9.0 is clearly serving as the catalyst for the development of these state-of-the-art games," said Dean Lester, general manager of Windows Gaming and Graphics at Microsoft Corp. "'Half-Life 2' emphasizes the trend we are already seeing: Games for Windows now deliver the most cutting-edge technology and immersive entertainment available anywhere."

"DirectX 9.0 has been crucial in helping us create a worthy sequel to 'Half-Life,' one that gives Windows gamers everything they've been waiting for, a truly unequaled experience," said Gabe Newell, co-founder of Valve. "We are thrilled that our relationship with Microsoft has produced a title that all of us can be proud of."