Heres a project i been working on on my spare time over the past year.

file->new smash map to make a map.

hold d right click = delete
hold c left click = change color
hold m left click = add monsters
hold n left click = add NPC

since the file is 3MB. It can be downloaded at

www.po2.net/temp1/NarutoWebWorldEditor.zip

Give Feedback please of things to add and things that could of been done better.