Miegakure has been announced for PS4 and developer Marc ten Bosch has explained that it is a 4D game for the PS4. It’s actually quite a complicated explanation on what the game is trying to achieve, so it’s handy that a video describing what Miegakure is has been released. Essentially it appears that the 4th dimension in this case allows you to shift into a new location that occupies the same space as the location you’re in.
In the blog post it is explained in a way to say that we as 3D beings can’t perceive a 4th dimension, much like a 2D object living in a 2D world can’t perceive the 3rd dimension, sort of like Fez. Personally I think the more I try to explain the concept of Miegakure the more confused I get, so it really is a good idea to watch the short video above. It clears up some of the theories behind the game.]
Source: PS Blog