i just played with it a bit and it's kind of awesome! It takes like 5 min to get the hang of it. I didn't notice until I came back here about publishing completed maps, that's great too. Passed along to my (many) game playing friends. If you decided to open source it I would join on for sure.

Why is the hallway tool called "snap to grid"? That was the one I couldn't figure out how to get back to because it's a non-intuitive name imo. When I went back in just now and restarted doodling, I saw that was the tool highlighted.

Also, the way the wall tool works is harder to use than the way the "hallway" aka "snap to grid" tool works, imo the latter is more intuitive.

Just some thoughts! Awesome work!