The short version: this is an insane game for insane people, and I loved nearly every moment of it.
The long version: this starts as, basically, Sokoban, but quickly reveals itself as much more than that: the spheres (or "larvae") you push "simulate gravity as camouflage" i.e. fall in the direction dependant on how they wre pushed. The difficulty past the first five or six levels skyrockets, and the game keeps piling up new mechanics on you until almost the very end. It requires excellent spatial awareness, but the feeling of satisfaction after cracking a particularly fiendish puzzle is unparalleled. The levels are ordered in semi-nonlinear fashion, but there are several "chokepoints" that may block you from further progress for hours as you despair for a solution.
The presentation is very simplistic (as you van see from the screenshots), but clear and legible. The sound and music are, fittingly, ascetic, with ambient humming and chanting.
You will get stuck. More than once. And you'll love it.