Really awesome feel to it. The puzzle mechanic felt nice and intuitive. Nice choice of music. The overall aesthetic was atmospheric. The implied story added a lot to the atmosphere as well.
Only issues would be that the keyboard didn't work on the main menu, and that I wish the camera was more zoomed in or followed the player as when I was off in the distance it got weird looking to be so small on screen.
Overall, a very nice entry to the jam. Cool premise with the capacity for a larger game.