Hey, thanks for getting in touch and asking!
Do you mean world map editor? We haven't thought about that yet as it's something that will take time to develop. We're focusing on the game mechanics first.
We wrote 'Demo' to represent the level of content in the game to narrow your expectations. It's still an alpha version. But, maybe we should rename to 'Alpha' instead because all the content we've developed for the game so far is in the build you can download.