"It took six days to create the Earth. Another World took two years"; Chahi noted his own exhaustion at completing this project is mirrored in the near-death of Lester at the end of the game. Upon publishing, Delphine did not perform a playtest of the full game, only having previously tested the first portion of the game. Delphine's U.S. publisher Interplay undertook a full playtest and Chahi fixed a number of bugs that arose from this. Interplay had also requested additional changes in the game, including making the game longer and changing the game's introduction music. Chahi was adamant about retaining the game's opening music, and had attempted to change Interplay's minds by sending them an "infinite fax", a looped piece of paper, with the message "keep the original intro music" on it. Only when Delphine's lawyer got involved and told Interplay they legally could not change the music did Interplay relax this requirement. Soundtrack The game's music was composed by Jean-François Freitas. The music was influenced by film soundtracks such as Back to the Future. Black Screen Records released CD and vinyl versions of the 18-song soundtrack in August 2017. Release The game was originally released for the Amiga and Atari ST in November 1991, running at a display resolution of 320×200 pixels. These versions received less play-testing than other versions, making for a less-fluid game, but the Amiga's sound capabilities afford it a high sound quality compared to contemporary ports. The game released on the Atari ST is identical, but with a less refined sound, and its colors are less sharp than on Amiga. These versions had code wheel protection that made it difficult to use unauthorized copies, forcing the player to enter a code (series of figures) looked up from a code wheel that came with the game. The player had to turn the wheel according to the number that was requested in the screen whenever the game is loaded in order to reload the game. Another small change between the Amiga and ST versions and the others was that Lester would yell as he grabs the vine in the first area if he was not being chased by the beast in these versions; this feature was omitted from most other versions. The game was published in North America under the title Out of This World in order to avoid confusion with the popular but unrelated soap