Robyn Miller composed 40 minutes of synthesized music that became the soundtrack to Myst. Technical constraints of the time influenced the design of the game and the production of its graphics, which were state-of-the-art but static. Development began in 1991 and was Cyan's biggest undertaking to date. They conceived Myst as their first game for adults, receiving funding from publisher Sunsoft. The Miller brothers got their start in video game development by creating titles for children. There, players solve puzzles, and by doing so, travel to four other worlds, known as Ages, which reveal the backstory of the game's characters. In the game, players travel via a special book to the island of Myst. It was developed by Cyan, Inc., published by Broderbund, and initially released for the Macintosh personal computer platform in 1993. Myst is a graphic adventure puzzle video game designed by the Miller brothers, Robyn and Rand.