[QUOTE=Tokinsom] I'm working on a Metroidvania myself, actually. Definitely possible but you might want to look into AJAX, project files, tmx. importer, and dictionaries. I think there are some "Metroidvania" examples around here but they use individual layouts for each room/area which won't get you very far in the long run.[/QUOTE]
Why is that? Asset overload? Just curious. I'm making not a full-blown Metroidvania, more like a Flashback/Another World thing, but tech-wise they're pretty similar.