Arthouse sci fi thriller with half cooked badly realized ideas. Would have worked better as a long form FPS adventure game. It's as though Nolan played a video game (bioshock infinite perhaps, mixed with military fps) and got inspired to make a movie about pseudo spatial and time travel.
If you managed to spot the signs or clues early on you might get quite bored for the last half of the movie.
Ps: rework this as a game instead