I'm not getting anything from the links, they just seem to upload endlessly.
The content of those HelpDesk links (HelpDesk is (as of this writing) undergoing maintenance): Do Cyan's macOS games meet the application requirements for macOS Catalina?
Recent application requirement changes for MacOS Catalina are being addressed by our developers. Until their work is complete, some of our apps may be unusable if your system is updated to MacOS Catalina. Rest assured we are on the case and should have a fix in soon.
________ Which of Cyan's games are 64-bit compliant for the release of macOS Catalina?
Cyan's games that are available for macOS that are 64-bit compliant:
realMyst: Masterpiece Edition
Myst III: Exile
Riven: The Sequel to Myst
Myst: Masterpiece Edition
Cyan's games that available for macOS that are not currently 64-bit compliant:
URU: Complete Chronicles
Myst V: End of Ages
Myst IV: Revelation
Note: Cyan is working with Codeweavers, the developers who helped us update the games in 2018, to make them compliant with Apple's latest update requirements. We don't have an estimate for when this will be complete.