Rand Miller (born January 17, 1959 in Philadelphia, Pennsylvania, U.S.) is CEO and co-founder of Cyan Worlds (originally Cyan). He and brother Robyn Miller became famous due to the success of their computer game Myst, which remained the number one-selling game from its release in 1993 until that record was surpassed by The Sims nearly a decade later. Rand also worked on the game's sequel, Riven, and later reprised his role as protagonist Atrus in Myst III: Exile, Myst IV: Revelation, Myst V: End of Ages, realMyst, and . He also co-authored Myst novels The Book of Atrus, The Book of Ti'Ana, and The Book of D'ni.