Dark Messiah of Might and Magic. Game discussion.

but the price for that was a complete lack of open space and loading screens when transitioning from one room to another.

In general, the Source engine doesn't support huge spaces (complete game worlds, universes). More precisely, it does support it, but it would take too long to load. Notice that when you move from one location to another, as you said, a loading screen appears. And sometimes you have to wait quite a while for it. And what does it load in the end? Just small locations, positions...

And if it were a whole world, imagine how long it would take to load it completely.:cool: