The mouse movement is a little slidey but very impressive for 24 hours. I love that there's an inventory and everything. A little laggy for me too, even on a decent computer. Haven't tried disabling the shader
What are all the boxes meant to be?
There's a configurable settings file with mouse sensitivity and you can disable AO which is a bit faster.I just made up stuff that I thought looked cool so those are just procedural structures.