Download (courtesy of Dimensions of Arcanum): worlded2.zip This Arcanum Module was made by Sharon Shellman of Troika Games. It includes "Mod Building 101" the very first WorldEd tutorial that was ever released. Most people didn't understand it at the time but it was an excellent starting point for the otherwise document devoid world of Arcanum Modding. The module itself has a dungeon full of monsters to kill, a few small towns and a mystery that leaves you asking for more.
The links are broken. Thankfully I still have it in my pc: reuploaded on Moddb (since I don't know how to do that here) https://www.moddb.com/games/arcanum/downloads/dungeon-crawl Edit: apparently the version I had all this time has a severe crashing bug when reaching a flaming corridor. Unless anyone knows how fix it or if a fixed version exists there's nothing to do