Dungeon Master Forum

https://ultimacodex.com/2019/05/new-pro ... ld-editor/ so some one finally released a map editor for Ultima underworld 1. Atm it's windows based but at least there is one. Certainly hope other games also get editors.

Really interesting, thanks for the link!
And just in case you wondered like me how to change the level ... it's the slider on the bottom-left.