The trees sway in the breeze, and the sky has moving clouds. Wildlife includes creatures that walk through the environment and occasionally interact with the player. The game also features a number of effects applied in real time, such as lens flares, dynamic lighting, and an optional focal blur. In a trend started by the original "Myst", the game uses live actors to play the game's roles in live-action video sequences. There are more than 70 minutes of video, and the game allows players to look around and interact with the video while it is playing. "Revelation" was the first game in the series to be initially released on a DVD-ROM format at launch; a multiple CD-ROM version was not produced as it would have taken twelve compact discs to fit the data. Riven had been released as a DVD-ROM, but only after its first 5-cd version. Exile was later ported to DVD-ROM for the 10th Anniversary collection. Jack Wall composed, conducted, and produced the music for "Revelation"; the game was his second game score, following the music for "". Wall was initially a sound engineer and producer, and stated composing "was kind of like a next step for me, rather than something I decided to do early on". The success and recognition of "Exile"s score landed Wall the job of writing "Revelation"s music with a budget of $100,000—twice the amount he had worked with for "Exile". Wall reused, reorchestrated and expanded themes composed by previous "Myst" composer Robyn Miller; for example, Wall reused Atrus' Theme from "Riven" and the brothers' leitmotifs from the original game. Wall credited the "Myst" universe and story with allowing him to write music "Western ears are somewhat less accustomed to"; "Revelation"s score was inspired by Eastern European music that Wall enjoyed in the 1990s. In addition to Jack Wall's score, the game features a song by Peter Gabriel entitled "Curtains", originally a B-side from Gabriel's single "Big Time". Gabriel also performed a voiceover for the game. Overall, "Revelation" was received positively by critics; the game garnered 82/100 and 82% averages on aggregate sites Metacritic and GameRankings, respectively; the Xbox version of the game received less favorable scores than the computer version. Its computer version debuted in sixth place on the NPD Group's sales chart for the October 3–9 period, before dropping to tenth in its second week.