Ubisoft has launched the official Web site for the fourth game in the storied Myst adventure series, titled Myst IV Revelation. Visitors to the Web site are essentially treated to a demo of the game; the Web site makes players click through several Myst-style rooms and environments to find downloads, game information, and puzzles, among other features. Myst IV Revelation, which is being developed by Ubisoft Montreal, returns to the original game's story, with the evil brothers Sirrus and Achenar once again making an appearance. The game is scheduled for release at the end of September.