http://store.steampowered.com/app/219890/
So, I saw this on TotalBiscuit's channel yesterday it is a first person puzzler that basically breaks gaming conventions, creates new ones and then challenges you with more than 3-dimensional puzzles.
It's a very odd duck indeed, the stripped down graphics really don't do it justice in screenshots however the experience of it is quite... well, puzzling.
Here's TB's video preview from PAX earlier last year (he was only allowed to release it yesterday):
http://youtu.be/fXty2JYIjPo
At first I thought it was nothing more than pretentious dribble but it actually looks interesting.
Looks interesting.
I know hey!
The dev says it can take anywhere from 4 to 10 hours to solve, sounds like an interesting challenge.