I made a short guide for running Unterwegs in Düsterburg on modern Windows, macOS, and Linux using EasyRPG Player (ENG and GER).
It covers downloading the game and RTP, merging the required files, and launching the game. I tried and verified it with Linux & macOS and just finished the Ice Wasteland. Would be nice if anyone could verify the Windows manual.
You can find the manual on Codeberg or Github.
Thank you @easyrpg contributors and enjoy playing!