This custom story is (interestingly enough) puzzle focused story experience. The whole story revolves around an interesting and unique puzzle, much like Valve's Portal.
While solving puzzles is the main filling of the story, there is an interesting story layer around it with a handful of characters and an optional mystery to solve.
So, what's so special about it?
To be honest... Not that much. I don't want to create a hype around this thing.
It's just a fun custom story I make with my girlfriend and my best friend.
This tech demo alone is better than most amnesia mods.
Your puzzles are challenging but unlike most amnesia mods it was fun trying to figure them out and it was quite satisfying to actually solve them. Most amnesia mod puzzles are enough challenging but not in a good way, more of a "what's the point/rage inducing" type.
Overall I enjoyed my time with the tech demo and hope that the full version comes out soon.