Rand Miller (born January 17, 1959 in Philadelphia, Pennsylvania, U.S.) co-founded Cyan (now Cyan Worlds) with brother Robyn Miller and became famous from the unexpected success of their computer game Myst, which remained the number one-selling game for the remainder of the 1990s. Rand also worked on the game's sequel, Riven, and later Myst III: Exile, Myst IV: Revelation, Myst V: End of Ages, realMyst, and Uru. The brothers also acted out parts in the game, with Robyn as Sirrus and Rand as Achenar and Atrus.