Just wanted to mention that there is another option for playing (many) of the old Magnetic Scrolls games: the "remastered" versions made by Strand Games, a small game developer founded by Hugh Steers (one of the founding members of Magnetic Scrolls) and Stefan Meier (creator of the Magnetic Scrolls Memorial site).
https://strandgames.com/
They've done some great work.. recovered the original source code from badly damaged backup tapes (by baking them), fixed some long-standing bugs, interface improvements (such as auto-mapping), and even added some original pictures and location-specific ambient sounds.
They are selling the remastered versions, but for 1.49 GBP, they're not getting rich with this project.