What? You didn't know that the Win 8 Preview comes loaded with a free, fantastic pinball game?
To get in, go to the Metro Interface. One of the tiles has X-Box Live, Pinball. The first time, you have to click your way through a few splash screens. When asked to sign in, don't, because it isn't connected yet. When you finally reach the pinball game, use the two Ctrl buttons for the flippers, and use "A" to launch the ball.