Really impressive! Gave me the good old Myst vibe!
On the down side: some work must me done on the optimisation... I have a beast of a pc, but it ran on something like 15 fps... and maybe show a little more what we are targetting, because interacting with the objects was sometime tedious.
It gave me just what it needs of hard thinking to make me dance between little frustration and little sense of accomplishment. Not revolutionary but nicely done! And it's a complete game, with a nice ending! Not a small feat in the 48h of the jam!