There's also an open source implementation of the Riven game engine for modern macOS, https://github.com/jfroy/rivenx https://github.com/jfroy/rivenx. Though th

There's also an open source implementation of the Riven game engine for modern macOS, https://github.com/jfroy/rivenx https://github.com/jfroy/rivenx. Though the Myst series has since been re-released.