I don't know if this is of any interest but the beta version of WTSS for the Atari is now available as a download
Development version of Where Time Stood Still.
Game seems to be very complete with conversations between the player characters and the enemies. Also night and day transitions are present.
You can change the game area by pressing 1-5, there is no demo mode and there are some differences in color palette. Also some differences in the game menu.
Huge thanks to Mark R. Jones who supplied the original development version