I've been toying around with an open world engine for a little while now, and it's mostly consisted of a lot of rooms connected by doors and warp points. I'm becoming a bit more interested in allowing the game to give the illusion of the entire world being one room, rather than using a fade transition between areas. Are there any good sources that show how I can create an entire overworld in a single room efficiently, or give a convincing illusion? It has to be pretty dynamic, so the world being within a single room would be ideal. I've googled this, but I can't seem to find any sorts of tutorials or examples that suit my needs.