I’m stretching my memory too far. I remember the City of Bywater world map, but I can’t even remember the world maps for the other scenarios, if I indeed played them.

This abandonware site appears to have a Windows release:

www.myabandonware.com/game/realmz-bce

I have no idea what scenarios might be included, and I’m always a little leery about running binaries from random sites outside of a VM, so I don’t know if I should recommend using it, but it’s there. There are serial numbers to activate what looks like all the listed scenarios in a comment there, so maybe it comes with all of them.