Okay, so we have walls, polygons witha texture... floors and ceilings, same thing... Doors, walls with holes in them, and a door geometry? + texture.. Stairs... Lots of squares? a 3d model? ??? Thats all I got... The question is, how am I supposed to like, not create these with long sessions of creating polygons and texturing them? Or is an interior just one big 3d model? Like, how do I create rooms and hallways and such, without um... Doing alot of work? lol... And hopefully not having to do alot of work to make it so I don't have to do alot of work... like creating an editor, that is defeating the purpose! Course that may be my only option :\...

I use a Portal System, where instead of creating individual triangles for each wall, I create Sectors. Each sector is by default a cube with 6 walls, and it can be streched, scaled, skewed, or otherwise modified into other shapes.

So rather than editing walls that enclose space, I edit space that is enclosed by walls.

To avoid the "alot of work... like creating an editor" my game engine itself has an edit mode, where I edit the level in realtime from first person view.