The download clocks in at 7.4 GB, just for one level, which tells you something about the assets. If you've ever wanted to walk around in the most realistic Mos Eisley imaginable, now's your chance!
The project started as a 3DSMax model of the Falcon, and then grew from there. 17 people at Obsidian joined in to provide artwork and other help.
This really pushes graphics hardware, getting about 45fps on a GTX 970/980, so if you have aging hardware you might just get a slideshow.
They are about 90% done with it and plan to add VR support in the future.
More about the dev process and download links here: https://80.lv/articles/star-wars-scene-production-in-ue4/
UPDATE: A review! Can tech demos have reviews? Is this allowed? What's next? Human Sacrifice, dogs and cats living together, mass hysteria!
There are options you can set to tune this to your hardware, so don't be discouraged by the specs I mentioned above. That was probably with everything on ultra. I got a ton of texture pop-in but otherwise this is gorgeous. The texture pop-in can be minimized by setting the Unreal Engine process to high priority in task manager. Don't do real-time unless you want your system to crash.
Also there's a "hidden weapon" that you can find, but I haven't yet. It's gotta be a lightsaber though right?
This feels like the closest interactive media has ever gotten to real Star Wars. I feel slightly embarrassed to admit that a tech demo made me feel emotions, but this did.
Time for a whole-series rewatch. :D