Last month, it was announced that Perfect Dark Zero was finally going to have a demo put up on Microsoft's Xbox 360 Marketplace. That sampling has gone live today, according to Major Nelson, the blog of Xbox Live director of programming Larry Hryb. The demo includes a map from the game, The Outpost, playable alone or with a friend in split-screen mode or over Xbox Live. And to give prospective buyers a taste of the game's deathmatch action, it also includes the new multiplayer map Plaza.