"It's the age-old problem of game development: how much time do you spend on your tools and technology and how much time do you spend on your game design? The better the tools and technology, the better -- and faster -- you can make your game. The more Microsoft does to provide developers with tools, the easier it is for game developers to develop better games." -- Epic's Tim Sweeney

"On the PC we have tools like HLSL. On Xbox, we have tools like PIX. These are both really powerful, and XNA combines the power of the PC and the power of the console into a best-of-breed platform." -- Valve's Gabe Newell