I’ve been fiddling around with Blender for a few months. I noticed it has its own game engine included.
I happen to have just bought a house to renovate. So, I thought it might be quite useful to try and build the house in blender and then run it in the game engine to be able to navigate it in real time with various alterations/decoration schemes.
Anyway, to cut a long story short, I have found it to be pretty impressive. It even allows for real time shadow casting.
Below is a vid of my initial work on it.