This is legit. I created a Map Editor, a NPC data reader(custom scripting), and a battle reader(also custom scripting). Now I need an Event reader, a battle simulator, and some other stuff.
careful, uploading anything that has a copyright can get it taken off the smilebasic server and earn you a possible ban, you might want to re-read the eula
The engine is a bit sloppy... Idk how easy it would be to modify. If you could figure out the scripting, it wouldn't be too hard to modify it. The map would be the easiest/hardest to modify(depends). For starters, the built in SmileBASIC map editor can't handle maps of this size.